From willamette-fcst at listsmart.osl.state.or.us Mon Nov 2 13:14:00 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Mon, 02 Nov 2009 15:14:00 -0600 Subject: [willamette-fcst] Forecast - Monday, November 2nd, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. NOON UPDATE Issued: Friday, October 30th, 2009 at 12:00pm. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 4:00pm. Straw stack burning is allowed from now until 4:00pm. Weather Discussion: In the wake of Thursday\'s damp warm front, mild southerly winds kept temperatures in the mid 50s overnight across western Oregon. The late-morning ODA surface analysis continued to show southerly pressure-gradients, with south winds gusting to about 20 mph. Temperatures were mostly in the mid to upper 50s under cloudy skies. Warming southerly winds slowly made their way eastward, across central and eastern Oregon, Thursday afternoon and night...changing the light snow to rain in most areas. However, the low-level cold air did not get scoured out of the Baker City area, where light snow turned to light freezing rain overnight. By late this moring, the temperature had finally risen above the freezing mark (mid 30s) in Baker City. Meanwhile, the vast majority of central and eastern Oregon had warmed well into the 40s and 50s with balmy southwesterly winds. An upper-level ridge of high pressure is weakly pushing onshore and helping to dry out the very moist air mass. Visible satellite imagery showed low clouds blanketing most of Washington and Oregon. Downsloping westerly winds were clearing the skies over much of central Oregon. Doppler radar showed areas of sprinkles across extreme northwestern Oregon and western Washington. Hillsboro picked up .01 inches of rain between 5 a.m. and 11 a.m. this morning, but most of the Willamette Valley stayed dry. Temperatures had warmed into the mid to upper 50s by late this morning, across western Oregon, and highs this afternoon should climb into the low to mid 60s...with a few sunbreaks. There will continue to be a chance of sprinkles in the north valley. Surface Winds: S 5-15 G20 this afternoon. Transport Winds: SSW 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 40. High Temperature: Salem\'s high temperature today will be near 64. Humidities: Minimum relative humidity will be near 70%. Sunrise/Sunset: Salem sunset tonight: 6:03pm; sunrise tomorrow: 7:50am. Extended Outlook: A cold front is forecast to bring a pretty good burst of rain to western Oregon late tonight through early Saturday morning, with one-quarter to one-half inch possible from the north coast to the northern Willamette Valley. The south valley will likely receive around one-tenth of an inch or less rainfall. The front will quickly push east of the Cascades, by midday, with some showers continuing to roll onshore through Saturday afternoon. The air mass behind this front is not very cold, so showers should begin tapering off by Saturday evening, with the snow level staying above 5000 feet. A flat and broad upper-level ridge of high pressure is forecast to build into the coastline Sunday, with continued drying of the air mass possibly leading to some sunbreaks. A weak weather system may brush the northwestern corner of the state, with some light rain, late Monday. The ridge is forecast to rebuild over the west coast, possibly giving Oregon a break from the damp weather for much of next week. There is a chance that a weather system will be strong enough to bring some rain on Wednesday, with another slated to move be, mainly to the north, on Friday. Tomorrow (31 Oct): Rain Early...Decreasing Showers in the Afternoon. 52/59 Sun (01 Nov): Areas of AM Fog. Partly Sunny. 40/58 Mon (02 Nov): Areas of AM Fog. Mostly Cloudy. Slight Chance of Rain North Late. 38/58 Tue (03 Nov): Areas of AM Fog. Partly Sunny in the Afternoon. 40/60 Wed (04 Nov): Areas of AM Fog. Mostly Cloudy. Slight Chance of Rain. 40/60 Thu (05 Nov): Areas of AM Fog. Partly Sunny in the Afternoon. 40/60 Fri (06 Nov): Increasing Clouds. Chance of Light Rain...Mainly North. 43/57 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Mon Nov 2 13:14:33 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Mon, 02 Nov 2009 15:14:33 -0600 Subject: [willamette-fcst] Forecast - Monday, November 2nd, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. NOON UPDATE Issued: Monday, November 2nd, 2009 at 1:00pm. Burn Advisory: Agricultural burning is not recommended. Stack burning is not allowed. Weather Discussion: A broad and flat upper-level ridge is slowly building over Oregon, with a strong westerly jet stream over Washington. A weak weather system was spreading clouds, and some rain, across northwestern Washington, at midday, with the trailing cold front extending southward to about 100 miles off the northern Oregon Coast. Ahead of the cold front, visible satellite imagery showed mostly clear skies across southwestern Washington and western Oregon. The ODA surface analysis showed high pressure centered over eastern Oregon, with southeasterly pressure-gradients across western Washington and weak gradients over most of western Oregon. Winds were mostly light and variable. After starting off near the freezing mark, with areas of fog and low clouds, some sunshine had helped Willamette Valley temperatures recover into the upper 40s and low 50s by midday. The cold front, to our northwest, is forecast to continue to weaken, as it pushes into northwestern Washington this afternoon and evening. Some sprinkles may extend as far south as the extreme northern Oregon Coast. Otherwise, dry conditions are forecast to continue today, with some sunshine warming temperatures in to the upper 50s (near-normal for early November). Light transport winds and low mixing heights will make for poor ventilation conditions. Surface Winds: Var 0-5 this afternoon. Transport Winds: N 5 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 9. High Temperature: Salem\'s high temperature today will be near 58. Humidities: Minimum relative humidity will be near 49%. Sunrise/Sunset: Salem sunset tonight: 4:59pm; sunrise tomorrow: 6:54am. Extended Outlook: The upper-level ridge of high pressure is forecast to rebuild over Oregon and Washington Tuesday and Wednesday, with increasing offshore flow at the surface. That will result in cool mornings, with areas of fog and low clouds, but plenty of afternoon sunshine. Daytime highs should climb slightly above normal. The ridge is forecast to shift east of the region Thursday, with increasing southwesterly flow aloft opening the door for a fairly potent weather system to come onshore Thursday night and Friday. A cold upper-level trough will move onshore over the weekend...lowering the snow level down to the Cascade passes. Another cold front is forecast to roll onshore next Monday night. Tomorrow (03 Nov): Areas of AM Fog and Low Clouds. Afternoon Sunshine. North Winds. 34/60 Wed (04 Nov): Areas of AM Fog and Low Clouds. Afternoon Sunshine. North Winds. 36/63 Thu (05 Nov): Increasing Clouds. Chance of Rain Late. 40/60 Fri (06 Nov): Rain. 48/56 Sat (07 Nov): Showers and Cool. Snow Level Dropping to 3500 Feet. 44/54 Sun (08 Nov): Mostly Cloudy. Chance of Showers. Snow Level 3500 Feet. 41/54 Mon (09 Nov): Increasing Clouds. Chance of Rain Late. Snow Level 6-7000 Feet. 41/54 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 3 08:59:58 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 03 Nov 2009 10:59:58 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 3rd, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Tuesday, November 3rd, 2009 at 9:00am. Burn Advisory: Agricultural burning is not recommended. Stack burning is not allowed. Weather Discussion: An upper-level ridge of high pressure will slowly build over Oregon and Washington today...pusing the jet stream northward, into southern British Columbia. Infrared satellite imagery showed considerable high and mid-level clouds streaming across both states this morning, via a westerly flow aloft. The ODA surface analysis showed high pressure centered over northeastern Oregon, with a thermal trough building northward along the southern Oregon Coast. That was increasing the northeasterly pressure-gradients across western Oregon. The Salem sounding this morning showed a significant low-level temperatures inversion, with surface temperatures in the 30s and 3000-foot temperatures near 50 degrees. East winds between 10 and 20 mph were dropping off of the coastal range and keeping fog off the beaches. Northerly winds had not developed enough yet to rid the Willamette Valley of morning fog, which was locally reducing visibilities to 1/4 mile or less. Mid-morning temperatures ranged from the mid 30s, in the foggy Willamette Valley, to near 50, with mid only middle and high clouds, along the coast. Increasing low-level offshore flow will continue to dry out the air mass today, with the building upper-level ridge further warming temperatures aloft. Morning valley fog should give way to filtered sunshine this afternoon, across the Willamette Valley, with temperatures climbing to around 60 degrees or higher. Sections of the coast range and Cascade foothills should reach the mid 60s, due to the very mild air aloft. Much of the coastline will also climb into the low to mid 60s today, due to the drying and warming influence of the offshore downsloping winds. Low mixing heights will make for poor ventilation conditions again today across the Willamette Valley. Surface Winds: NNE 5-15 this morning, NNE 5-15 this afternoon. Transport Winds: NE 12 this morning, NE 12 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1300 feet. Ventilation index 16. High Temperature: Salem\'s high temperature today will be near 60. Humidities: Minimum relative humidity will be near 46%. Sunrise/Sunset: Salem sunset tonight: 4:57pm; sunrise tomorrow: 6:55am. Extended Outlook: The upper-level ridge of high pressure is forecast to shift eastward Wednesday, to over Idaho and Montana. At the surface, easterly outflow, from the Columbia Gorge, will likely keep fog out of much of the Portland area Wednesday morning, but it should reform across the central and southern Willamette Valley. Areas of morning valley fog will give way to high and mid-level clouds, in the afternoon, with increasing southwesterly flow aloft over Washington and Oregon. Valley highs should climb above normal again Wednesday afternoon. The ridge is forecast to continue eastward on Thursday, with the first of several wet weather systems forecast to come onshore by the afternoon. The cold front is forecast to push east of the region Friday morning, with the steady rain turning showery. Snow levels will drop to around to Cascade passes. The next system is forecast to come onshore Saturday, followed by an even colder upper-level trough on Sunday. Yet another system is forecast to come onshore Monday. Tomorrow (04 Nov): Areas of AM Fog and Low Clouds. Filtered Afternoon Sunshine. 36/63 Thu (05 Nov): Increasing Clouds. Rain Developing by Afternoon. 40/60 Fri (06 Nov): Rain Turning to Showers. Snow Level Dropping to 4-5000 feet. 48/54 Sat (07 Nov): Rain. Snow Level 4-5000 Feet. 44/51 Sun (08 Nov): Decrasing Showers. Snow Level 3-4000 Feet. 42/52 Mon (09 Nov): Rain Developing. Snow Level 4-5000 Feet. 40/53 Tue (10 Nov): Showers. Snow Level 3-4000 Feet. 40/54 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Wed Nov 4 09:08:15 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Wed, 04 Nov 2009 11:08:15 -0600 Subject: [willamette-fcst] Forecast - Wednesday, November 4th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Wednesday, November 4th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from 12:00pm until 3:00pm. Straw stack burning is allowed from 12:00pm until 3:00pm. Weather Discussion: The upper-level ridge of high pressure that brought mostly sunny skies to the region on Tuesday had shifted eastward to over Idaho by this morning. Increasing southwesterly flow aloft was spreading considerable middle and high clouds across Washington and most of western Oregon. Overnight cooling and light winds combined to help fog form in the central and southern Willamette Valley this morning. Visibilities are locally below one-quarter of a mile, especially in the south valley. Dry easterly outflow, from the Columbia Gorge, kept fog from forming across much of the north valley. Areas of the north valley exposed to the easterly winds stayed in the upper 40s and low 50s overnight, but calm regions of the Willamette Valley dropped to near the freezing mark. Eugene dipped down to 32 degrees and Salem dropped to 33. Mid-morning temperatures ranged from the foggy mid 30s in the south valley to around 50, under mostly sunny skies, in the north valley. The ODA surface analysis showed strong easterly pressure gradients across western Oregon, with easterly winds blowing through the coast range passes to the beaches. East winds were continuing to gust over 30 mph at the western end of the Gorge, with light and variable winds across most of the Willamette Valley. Areas of morning valley fog will give way to high and mid-level clouds, in the afternoon, with increasing southwesterly flow aloft over Washington and Oregon. Highs should, once again, climb into the upper 50s and low 60s. Surface Winds: Var 0-5 this morning, ESE 3 this afternoon. Transport Winds: SE 5 this morning, SSE 6 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 10. High Temperature: Salem\'s high temperature today will be near 60. Humidities: Minimum relative humidity will be near 46%. Sunrise/Sunset: Salem sunset tonight: 4:56pm; sunrise tomorrow: 6:56am. Extended Outlook: The upper-level ridge is forecast to continue shifting eastward on Thursday, with the first of several potent weather systems forecast to come onshore by the afternoon. The first cold front is forecast to push across western Oregon Friday morning. Precipitation will turn showery Friday afternoon, with the snow level dropping to around to Cascade passes. A colder system is forecast to come onshore Saturday, with locally heavy rain and mountain snows...followed by slow drying on Sunday. A warmer system is forecast to come onshore late Monday, with snow levels likely lifting above the Cascade passes. A cool upper-level trough will drop the snow level back below the passes Tuesday and Wednesday. Thu (05 Nov): Increasing Clouds. Rain Developing in the Afternoon. South Winds. 40/60 Fri (06 Nov): Rain Turning to Showers. Snow Level Dropping to 4-5000 feet. 48/54 Sat (07 Nov): Rain. Possibly Heavy Mountain Snow. Snow Level 3-4000 Feet. 44/51 Sun (08 Nov): Decreasing Showers. Snow Level 4000 Feet. 42/54 Mon (09 Nov): Rain Developing Late. Snow Level Risning to 5-6000 Feet. 40/56 Tue (10 Nov): Showers. Snow Level 3-4000 Feet. 40/54 Wed (11 Nov): Showers. Snow Level 3000 Feet. 40/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 5 08:31:46 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 05 Nov 2009 10:31:46 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 5th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. NOON UPDATE Issued: Wednesday, November 4th, 2009 at 12:00pm. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed from now until 3:00pm. Weather Discussion: Visible satellite imagery showed a few remaining pockets of fog in the southern Willamette Valley late this morning, otherwise just high clouds were streaming over the region in a southwesterly flow aloft. After locally starting out near the freezing mark this morning, Willamette Valley temperatures ranged from the mid 40s, where fog was persisting in the south valley, to the mid 50s across most of the north valley. The late morning ODA surface analysis continued to show easterly pressure gradients across western Oregon, with easterly winds blowing through the coast range passes to the beaches. East winds were continuing to gust over 30 mph at the western end of the Gorge, with light and variable winds across most of the Willamette Valley. The few remaining areas of morning valley fog will give way to high and mid-level clouds, in the afternoon, with increasing southwesterly flow aloft over Washington and Oregon. Valley highs will range from the mid 50s south, where the morning fog was more persistent, to the low 60s in the north. Ventilation conditions will slowly improve this afternoon, as southeasterly transport winds beging to increase. Surface Winds: ESE 3 this afternoon. Transport Winds: SSE 6 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 10. High Temperature: Salem\'s high temperature today will be near 63. Humidities: Minimum relative humidity will be near 40%. Sunrise/Sunset: Salem sunset tonight: 4:56pm; sunrise tomorrow: 6:56am. Extended Outlook: The upper-level ridge is forecast to continue shifting eastward on Thursday, with the first of several potent weather systems forecast to come onshore by the afternoon. The first cold front is forecast to push across western Oregon Friday morning. Precipitation will turn showery Friday afternoon, with the snow level dropping to around to Cascade passes. A colder system is forecast to come onshore Saturday, with locally heavy rain and mountain snows...followed by slow drying on Sunday. A warmer system is forecast to come onshore late Monday, with snow levels likely lifting above the Cascade passes. A cool upper-level trough will drop the snow level back below the passes Tuesday and Wednesday. Thu (05 Nov): Increasing Clouds. Rain Developing in the Afternoon. South Winds. 40/60 Fri (06 Nov): Rain Turning to Showers. Snow Level Dropping to 4-5000 feet. 48/54 Sat (07 Nov): Rain. Possibly Heavy Mountain Snow. Snow Level 3-4000 Feet. 44/51 Sun (08 Nov): Decreasing Showers. Snow Level 4000 Feet. 42/54 Mon (09 Nov): Rain Developing Late. Snow Level Risning to 5-6000 Feet. 40/56 Tue (10 Nov): Showers. Snow Level 3-4000 Feet. 40/54 Wed (11 Nov): Showers. Snow Level 3000 Feet. 40/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 5 09:13:38 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 05 Nov 2009 11:13:38 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 5th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. ...No Noon Update Today... Issued: Thursday, November 5th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed from now until 3:00pm. Weather Discussion: Satellite imagery showed a weak weather system along the Oregon Coast with a much stronger cold front a couple of hundred miles offshore. The first system was already bringing some rain and brisk south winds to the north coast. Clouds were increasing over the Willamette Valley and Doppler radar was showing a few areas of light rain moving into the north valley. Mid-morning temperatures ranged from the upper 40s in the Willamette Valley to the low 60s along the coast, where south winds were gusting to over 30 mph. Winds were still light in the Willamette Valley. South winds will increase along the coast and across the Willamette Valley today, with gusts to 60 mph possible along the coast this evening and to about 40 mph in the Willamette Valley. The valley should see only areas of light rain through mid-afternoon, with increasing rain this evening and overnight. Due to warm air aloft and increasing south winds, valley highs should climb to around 60 degrees this afternoon with good ventilation conditions for stack burning. Surface Winds: SE 10-20 this morning, S 15-25 G30 this afternoon. Transport Winds: S 20 this morning, S 30 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 51. High Temperature: Salem\'s high temperature today will be near 60. Humidities: Minimum relative humidity will be near 60%. Sunrise/Sunset: Salem sunset tonight: 4:55pm; sunrise tomorrow: 6:58am. Extended Outlook: a strong cold front is forecast to bring more than one-half inch of rain to the coast and Willamette Valley overnight, along with brisk southerly winds. Precipitation will turn showery on Friday, with the snow level rapidly dropping to about 3500 feet in the Cascades. Expect wintry travel conditions over the passes by Friday afternoon. South winds will remain blustery across western Oregon, with numerous showers and a slight chance of thunderstorms. Another cold front is forecast to come onshore Saturday, with snow levels staying below pass levels. Locally heavy snows are expected in the Cascades, with considerable coastal and valley rain. Showers will taper off Sunday, as a weak and transitory upper-level ridge moves across the region. Snow levels should remain below the Cascade passes. A warmer system is forecast to come onshore late Monday, with snow levels initially lifting just above the Cascade passes Monday afternoon. However, a trailing cool upper-level trough will quickly drop the snow level back below the passes Tuesday and Wednesday, with considerable shower activity across all of western Oregon. Another upper-level ridge is forecast to bring some drying next Thursday, but that is getting beyond the accuracy range of the computer models. Tomorrow (06 Nov): Rain Turning to Showers. Snow Level Dropping to 3500 feet. 48/54 Sat (07 Nov): Increasing Rain. Heavy Mountain Snow Likely. Snow Level 3-4000 Feet. 44/51 Sun (08 Nov): Decreasing Showers. Snow Level 4000 Feet. 40/53 Mon (09 Nov): Rain Developing Late. Snow Level Rising to 5-6000 Feet. 39/55 Tue (10 Nov): Showers. Snow Level 3-4000 Feet. 42/52 Wed (11 Nov): Showers. Snow Level 3000 Feet. 41/52 Thu (12 Nov): Mostly Cloudy. Slight Chance of Showers...Mainly North. 38/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Fri Nov 6 07:58:22 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Fri, 06 Nov 2009 09:58:22 -0600 Subject: [willamette-fcst] Forecast - Friday, November 6th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. ...No Noon Update Today... Issued: Thursday, November 5th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed from now until 3:00pm. Weather Discussion: Satellite imagery showed a weak weather system along the Oregon Coast with a much stronger cold front a couple of hundred miles offshore. The first system was already bringing some rain and brisk south winds to the north coast. Clouds were increasing over the Willamette Valley and Doppler radar was showing a few areas of light rain moving into the north valley. Mid-morning temperatures ranged from the upper 40s in the Willamette Valley to the low 60s along the coast, where south winds were gusting to over 30 mph. Winds were still light in the Willamette Valley. South winds will increase along the coast and across the Willamette Valley today, with gusts to 60 mph possible along the coast this evening and to about 40 mph in the Willamette Valley. The valley should see only areas of light rain through mid-afternoon, with increasing rain this evening and overnight. Due to warm air aloft and increasing south winds, valley highs should climb to around 60 degrees this afternoon with good ventilation conditions for stack burning. Surface Winds: SE 10-20 this morning, S 15-25 G30 this afternoon. Transport Winds: S 20 this morning, S 30 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 51. High Temperature: Salem\'s high temperature today will be near 60. Humidities: Minimum relative humidity will be near 60%. Sunrise/Sunset: Salem sunset tonight: 4:55pm; sunrise tomorrow: 6:58am. Extended Outlook: a strong cold front is forecast to bring more than one-half inch of rain to the coast and Willamette Valley overnight, along with brisk southerly winds. Precipitation will turn showery on Friday, with the snow level rapidly dropping to about 3500 feet in the Cascades. Expect wintry travel conditions over the passes by Friday afternoon. South winds will remain blustery across western Oregon, with numerous showers and a slight chance of thunderstorms. Another cold front is forecast to come onshore Saturday, with snow levels staying below pass levels. Locally heavy snows are expected in the Cascades, with considerable coastal and valley rain. Showers will taper off Sunday, as a weak and transitory upper-level ridge moves across the region. Snow levels should remain below the Cascade passes. A warmer system is forecast to come onshore late Monday, with snow levels initially lifting just above the Cascade passes Monday afternoon. However, a trailing cool upper-level trough will quickly drop the snow level back below the passes Tuesday and Wednesday, with considerable shower activity across all of western Oregon. Another upper-level ridge is forecast to bring some drying next Thursday, but that is getting beyond the accuracy range of the computer models. Tomorrow (06 Nov): Rain Turning to Showers. Snow Level Dropping to 3500 feet. 48/54 Sat (07 Nov): Increasing Rain. Heavy Mountain Snow Likely. Snow Level 3-4000 Feet. 44/51 Sun (08 Nov): Decreasing Showers. Snow Level 4000 Feet. 40/53 Mon (09 Nov): Rain Developing Late. Snow Level Rising to 5-6000 Feet. 39/55 Tue (10 Nov): Showers. Snow Level 3-4000 Feet. 42/52 Wed (11 Nov): Showers. Snow Level 3000 Feet. 41/52 Thu (12 Nov): Mostly Cloudy. Slight Chance of Showers...Mainly North. 38/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Fri Nov 6 09:00:31 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Fri, 06 Nov 2009 11:00:31 -0600 Subject: [willamette-fcst] Forecast - Friday, November 6th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Friday, November 6th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed, for dry stacks, from now until 3:00pm. Weather Discussion: a strong cold front moved onshore Thursday afternoon and across western Oregon Thursday evening. It brought quite strong southerly winds to the Oregon Coast and blustery conditions to the Willamette Valley. Southerly winds between 40 and 50 mph were common along the entire coastal strip with some much stronger gusts. Garibaldi, on the north coast, recorded a gust to 91 mph shortly after 5 p.m. Thursday, with a gust of 89 mph recorded at the Sea Lion Caves, on the central coast, around 6 p.m. Southerly wind gusts to 80 mph were reported at Tillamook Head and Waldport. Cape foulweather recored a 78 mph gust. Blustery south winds moved into the Willamette Valley Thursday evening, with gusts around 30 mph common. Rainfall amounts were also impressive, with most of the coastline getting just over an inch of rain. Some of the Cascade foothills also picked up over an inch, with most of the Willamette Valley getting between one-third and two-thirds of an inch. A cool upper-level trough followed the cold front onshore overnight, with numerous showers and even a few thunderstorms...mainly along the coast. The cold front was pusing into Idaho at mid-morning. Colder air aloft had dropped the freezing levels over Salem and Medford to 5200 feet and 5900 feet by 5 a.m. this morning. ODOT road comeras showed the rain had changed to snow over the Cascades passes, with pass temperatures near 30 degrees. Showers will continue today, along with blustery southwest winds. There is a slight chance of a thunderstorm. Heavy snow is expected over the Cascade passes. Valley highs will only climb into the low to mid 50s. Surface Winds: SW 10-20 G25 this morning, SW 7-17 G20 this afternoon. Transport Winds: SW 22 this morning, S 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 44. High Temperature: Salem\'s high temperature today will be near 54. Humidities: Minimum relative humidity will be near 69%. Sunrise/Sunset: Salem sunset tonight: 4:53pm; sunrise tomorrow: 6:59am. Extended Outlook: Another cold front is forecast to come onshore Saturday afternoon and evening. Snow levels will likely remain in the 3-4000 foot range, with an additional foot of snow possible over the Cascade passes. BLustery and wet weather will continue along the coast and in the Willamette Valley. Showers will taper off Sunday, as a weak and transitory upper-level ridge moves across the region. with snow levels lifting to around 5000 feet. The next weather system is forecast to come onshore around midday Monday. Ahead of it, snow levels will lift to around 6000 feet. The cold front should bring another round of soaking rains to western Oregon Monday night. A cool upper-level trough will bring showery conditions Tuesday. The snow level is forecast to drop below 4000 feet, with accumulating snow likely over the mountain passes. The upper-level trough is forecast to weaken, and push east of the region, by late Wednesday, with a drier northwesterly flow aloft developing. The long-range models are showing show an upper-level ridge building into the coastline just strongly enough to keep Thursday and Friday dry, with areas of morning valley fog. Another wet weather system is forecast to come onshore next weekend. Sat (07 Nov): Increasing Rain. Heavy Mountain Snow Likely. Snow Level 3-4000 Feet. 44/52 Sun (08 Nov): Mostly Cloudy. Decreasing Chance of Showers. Snow Level 4000 Feet. 40/55 Mon (09 Nov): Increasing Clouds. Rain be Evening. Snow Level Rising to 6000 Feet. 39/55 Tue (10 Nov): Showers with Mountain Snow. Snow Level 3-4000 Feet. 45/52 Wed (11 Nov): Decreasing Showers. Snow Level 3000 Feet. 41/52 Thu (12 Nov): Areas of AM Fog. Partly Sunny. 38/54 Fri (13 Nov): Areas of AM Fog. Partly Sunny. 39/52 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Mon Nov 9 09:00:26 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Mon, 09 Nov 2009 11:00:26 -0600 Subject: [willamette-fcst] Forecast - Monday, November 9th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Monday, November 9th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed, for dry stacks, from now until 3:00pm. Weather Discussion: It was a stormy weekend across Oregon, with wind, rain, mountain snow, and even a weak tornado. Southerly winds gusted to around 30 mph at times in the Willamette Valley and to near 40 mph along the coast. The blustery winds were accompanied by more than an inch of rain, both along the coast and across the Willamette Valley. Temperatures were near-normal, with highs mostly in the low to mid 50s. Heavy snow fell in the northern Cascades, with the ski resorts on Mt. Hood picking up as much as 2 1/2 feet of new snow. Snowfall amounts rapidly tapered off to the south, with Mt. Bachelor receiving just over a foot of snow and Willamette Pass only a few inches. The Mt Hood passes picked up around a foot of snow, with Willamette Pass just getting a dusting. A rare weak tornado touched down in Lincoln City Friday night, with wind speeds estimated between 65 and 85 mph. The tornado\'s destruction path was only about 150 yards long and 80 yards wide. 11 homes and 3 cars were damaged, but there were no injuries reported. There will be no break in the stormy weather today, with satellite imagery showing another active cold front about to move onshore at mid-morning. Ahead of the front, clouds had already spread across the western two-thirds of Oregon, with Doppler radar and surface reports showing light to moderate rain along the coast...moving into the Willamette Valley. The ODA surface analysis showed tightening southeasterly pressure-gradients across western Oregon. Southesterly winds were gusting to about 25 mph from the northern and central coast across the northern Willamette Valley. Mid-morning temperatures ranged from the mid 40s to the low 50s across western Oregon. As the cold front comes onshore, later this morning, a brief period of strong and gusty winds is possible along the north coast, where the National Weather Service has issued a high wind warning for gusts to 60 mph. It will also get quite windy along the central coast later this morning. As the cold front moves inland late this morning, the northern Willamette Valley will likely have the strongest winds, with gusts to around 30 mph possible. The front will also produce a few hours of locally moderate to heavy rainfall, before pushing east of the Cascades this afternoon. Warmer air ahead of the storm has lifted snow levels to above 6000 feet, so the mountain passes will initially get rain from this system. ODOT road cameras showed generally just wet pavement over the passes at mid-morning, with temperatures well above freezing. The steady rain will turn showery this afternoon, with a few breaks in the clouds possible. Highs will climb into the low to mid 50s, with slowly decreasing southerly winds. Surface Winds: SSE 10-20 G30 this morning, S 10-20 G25 this afternoon. Transport Winds: S 30 this morning, SSW 25 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1500 feet. Ventilation index 45. High Temperature: Salem\'s high temperature today will be near 53. Humidities: Minimum relative humidity will be near 63%. Sunrise/Sunset: Salem sunset tonight: 4:50pm; sunrise tomorrow: 7:03am. Extended Outlook: A upper-level trough will slowly approach the coastline Tuesday, with a continued moist southwesterly flow aloft maintaining a chance of showers across western Oregon. The snow level will lower to the Cascade passes tonight and Tuesday. Showers will increase on Wednesday, as the upper-level trough finally swings onshore. The snow level will drop to around 3000 feet, with locally heavy snow possible over the Cascade passes. A somwwhat drier northwesterly flow aloft is forecast for Thursday, with a cold weather system forecast to drop into the region, from the Gulf of Alaska, on Friday. That system could produce locally heavy snow, again, over the Cascade passes, with the lowest snow levels so far this season. A warm front is forecast to quickly lift snow levels Saturday, with a chance of light rain. Another cold front is forecat to come onshore Sunday, but with a warmer westerly flow aloft. Tomorrow (10 Nov): Mostly Cloudy. Chance of Showers. Snow Level 4000 Feet. 42/54 Wed (11 Nov): Increasing Showers. Snow Level 3000 Feet. 40/50 Thu (12 Nov): Mostly Cloudy. Chance of Showers. snow level 3000 feet. 38/49 Fri (13 Nov): Rain and Mountain Snow. Snow Level Dropping to 2000 Feet. 38/48 Sat (14 Nov): Mostly Cloudy. Chance of Light Rain. Snow Level 4000 Feet. 40/52 Sun (15 Nov): Rain...Mainly North. Snow Level 5000 Feet. 44/54 Mon (16 Nov): Mostly Cloudy. 41/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 10 09:07:02 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 10 Nov 2009 11:07:02 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 10th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Tuesday, November 10th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed from now until 3:00pm. Weather Discussion: The cold front that swept across western Oregon Monday stretched from central Montana to southern Idaho this morning. In it\'s wake, a few showers were falling this morning, mainly over northeastern Oregon. Satellite and radar imagery revealed a fairly dry zone, in the wake of the cold front, covering eastern Washington and most of Oregon at mid-morning. However, there was a large area of showers, associated with a cold upper-level trough, just off of the Washington and northern Oregon coast. Southwesterly flow aloft was rotaing those showers onshore across western Washington and extreme northwestern Oregon. A few showers will also coming onshore into southwestern Oregon. The ODA surface analysis showed weaker southeastery pressure-gradients, across western Oregon, than on Monday. Winds were light enough across the Willamette Valley this morning for areas of fog to form, with visibilities locally less than one-quarter of a mile. Mid-morning temperatures were mostly in the mid to upper 40s, except for foggy areas, which were mostly still in the 30s. The freezing levels over Salem and Medford were measured this morning at 4200 and 6000 feet respectively...putting the snow level at or below the Cascade passes. ODOT road cameras showed an inch or two of new snow on the passes this morning. Southwesterly flow aloft is forecast to continue rotating showers onshore today...mainly into western Washington and northwestern Oregon. The showers will fall as snow over the Cascade passes. The air aloft is cold enough to support the development of isolated thundershower activity, especially near the coast. The showers rotating onshore will help to mix the air mass today, lifting the fog from the Willamette Valley and making for good ventilation conditions. Cold air aloft will cap high temperatures in the mid 50s this afternoon, even with some sunbreaks. Temperatures will quickly fall back into the 40s near showers. Some showers could produce small hail, especially near the coast and over the coast range. Surface Winds: SSE 5-15 this morning, S 5-15 this afternoon. Transport Winds: S 15 this morning, SSW 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2700 feet. Ventilation index 54. High Temperature: Salem\'s high temperature today will be near 55. Humidities: Minimum relative humidity will be near 64%. Sunrise/Sunset: Salem sunset tonight: 4:48pm; sunrise tomorrow: 7:05am. Extended Outlook: Showers will increase on Wednesday, as the offshore upper-level trough swings over the region. The snow level will continue to drop...possibly as low as 2500 feet in heavier showers. Locally heavy snow is possile over the Cascade passes. A somwwhat drier northwesterly flow aloft is forecast by Thursday afternoon. Another cold weather system is forecast to drop into the region, from the Gulf of Alaska, on Friday. That system could also produce locally heavy snow, over the Cascade passes. A warm front is forecast to quickly lift snow levels back above the passes by late Saturday. A cold front is forecast to come onshore Sunday...mainly in Washington and northern Oregon. A warmer westerly flow aloft will keep snow levels above the Cascade passes. Another system is forecast to come onshore next Tuesday. Tomorrow (11 Nov): Increasing Showers. Snow Level 3000 Feet. 40/50 Thu (12 Nov): Mostly Cloudy. Decreasing Showers. Snow level 3000 feet. 38/49 Fri (13 Nov): Rain and Mountain Snow. Snow Level 3000 Feet. 40/48 Sat (14 Nov): Mostly Cloudy. Chance of Light Rain. Snow Level Rising to 5000 Feet. 36/50 Sun (15 Nov): Rain...Mainly North. Snow Level 5000 Feet. 42/54 Mon (16 Nov): Mostly Cloudy and Mild. 41/55 Tue (17 Nov): Rain Developing. 41/52 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 10 12:13:55 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 10 Nov 2009 14:13:55 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 10th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. ...No Updates Before Thursday, November 12th, 2009 at 9:00am... NOON UPDATE Issued: Tuesday, November 10th, 2009 at 12:00pm. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed, for dry stacks, from now until 3:00pm. Weather Discussion: The cold front that swept across western Oregon Monday stretched from central Montana to southern Idaho late this morning. In it\'s wake, southwesterly flow aloft was rotating a large area of showers, associated with a cold upper-level trough, into western Washington and extreme northwestern Oregon. The remainder of Oregon was enjoying mostly sunny skies at midday. The ODA surface analysis showed weak high pressure, centered over eastern Oregon, with southeasterly pressure-gradients across western Oregon feeding into a low-pressure area off the British Columbia coastline. Increasing south-southeasterly winds, gusting as high as 20 mph, cleared the areas of fog from the Willamette Valley by late this morning. Mostly sunny skies helped temperatures climb into the low to mid 50s. The freezing levels over Salem and Medford were measured this morning at 4200 and 6000 feet respectively...putting the snow level at or below the Cascade passes. ODOT road cameras showed mostly wet pavement over the Cascade passes, where midday temperatures had struggled to just above the freezing mark. Southwesterly flow aloft is forecast to continue rotating showers onshore today...mainly into western Washington and northwestern Oregon. Doppler radar showed scattered showers along the north Oregon Coast and over the northern coast range at midday. Any showers making it as far east as the northern Cascades will fall as snow over the passes. The air aloft is cold enough to support the development of isolated thundershower activity over extreme northwestern Oregon this afternoon. South-southeasterly winds and fairly high mixing heights will make for good ventilation conditions today. Cold air aloft will cap high temperatures in the mid 50s this afternoon, even with mostly sunny skies. Some of those showers rotating onshore into extreme northwestern Oregon could produce small hail this afternoon. Showers will spread south and east, across western Oregon, tonight, as the offshore upper-level trough moves closer to the coastline. Surface Winds: S 5-15 G20 this afternoon. Transport Winds: SSW 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2700 feet. Ventilation index 54. High Temperature: Salem\'s high temperature today will be near 57. Humidities: Minimum relative humidity will be near 57%. Sunrise/Sunset: Salem sunset tonight: 4:48pm; sunrise tomorrow: 7:05am. Extended Outlook: Showers will increase on Wednesday, as the offshore upper-level trough swings over the region. The snow level will continue to drop...possibly as low as 2500 feet in heavier showers. Locally heavy snow is possile over the Cascade passes. A somwwhat drier northwesterly flow aloft is forecast by Thursday afternoon. Another cold weather system is forecast to drop into the region, from the Gulf of Alaska, on Friday. That system could also produce locally heavy snow, over the Cascade passes. A warm front is forecast to quickly lift snow levels back above the passes by late Saturday. A cold front is forecast to come onshore Sunday...mainly in Washington and northern Oregon. A warmer westerly flow aloft will keep snow levels above the Cascade passes. Another system is forecast to come onshore next Tuesday. Tomorrow (11 Nov): Increasing Showers. Snow Level 3000 Feet. 40/50 Thu (12 Nov): Mostly Cloudy. Decreasing Showers. Snow level 3000 feet. 38/49 Fri (13 Nov): Rain and Mountain Snow. Snow Level 3000 Feet. 40/48 Sat (14 Nov): Mostly Cloudy. Chance of Light Rain. Snow Level Rising to 5000 Feet. 36/50 Sun (15 Nov): Rain...Mainly North. Snow Level 5000 Feet. 42/54 Mon (16 Nov): Mostly Cloudy and Mild. 41/55 Tue (17 Nov): Rain Developing. 41/52 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 12 09:06:16 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 12 Nov 2009 11:06:16 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 12th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Thursday, November 12th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed, for dry stacks, from now until 3:00pm. Weather Discussion: A small but intense upper-level disturbance was centered near the mouth of the Columbia River at mid-morning. An associated area of cold showers extended from southwestern Washington across much of western and central Oregon. The air aloft is quite cold with this system. The freezing levels over Salem and Medford were measured at just 3500 and 3800 feet respectively early this morning. Late-morning imagery from ODOT road cameras confirmed sticking snow over the Cascade passes with wet snow sticking on the trees and rooftops as low 1670 feet, near highway 22, in Detroit. Sticking snow also fell, from Bend to Chemult, in central Oregon this morning. ODOT road cameras showed just wet pavement over the coastal range passes. The mid-morning ODA surface analysis also showed a weak low-pressure center near the mouth of the Columbia River. South-southeasterly pressure-gradients were producing 5-15 mph winds from the coast across the Willamette Valley. Doppler radar showed the bulk of the shower activity had pushed east of the Willamette Valley, but a few showers were still rotating onshore, in a westerly flow aloft, around the center of the upper-level disturbance. Even with quite cold air aloft, shower activity kept temperatures above freezing across western Oregon overnight. Morning minimums ranged from the mid 30s to the low 40s across the Willamette Valley. The center of the upper-level disturbance is forecast to slide southeastward, to over central Oregon, by late this afternoon. Showers should taper off across western Oregon with some sunbreaks. However, cold air aloft will keep surface temperatures mostly in the 40s across western Oregon today. Partial clearing this evening will allow temperatures to drop back well into the 30s overnight, before clouds increase from the next weather system by early Friday morning. Surface Winds: S 5-15 this morning, S 5-12 this afternoon. Transport Winds: SSW 12 this morning, SSW 8 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 3200 feet. Ventilation index 38. High Temperature: Salem\'s high temperature today will be near 49. Humidities: Minimum relative humidity will be near 68%. Sunrise/Sunset: Salem sunset tonight: 4:46pm; sunrise tomorrow: 7:07am. Extended Outlook: A cold front is forecast to drop into the region, from the Gulf of Alaska, on Friday. It will likely bring a few hours of locally heavy snow to the Cascades. Snow could fall as low as 1500 feet in the northern coast range and the Cascade foothills. More rain is in store, for the coast and the Willamette Valley, Friday morning, with showers Friday afternoon. Clearing skies Friday night could allow valley temperatures to locally drop below the freezing mark, with areas of fog forming. A warm front is forecast to increase clouds across northwestern Oregon Saturday afternoon and lift the snow level to near 4000 feet. Rain is likely across western Washington and northwestern Oregon by Sunday morning, with the snow level rising above 5000 feet in the Oregon Cascades. The warm front is forecast to push north of the region by Sunday night with rain tapering off. Temperatures should be quite mild Monday and Tuesday, ahead of a cold front forecast to come onshore Tuesday evening. More valley rain and mountain snow is forecast for the second half of next week. Tomorrow (13 Nov): Rain and Mountain Snow. Snow Level Dropping to 1500 Feet. 36/47 Sat (14 Nov): Areas of AM Fog. Increasing Clouds. Snow Level Rising to 5000 Feet. 32/48 Sun (15 Nov): Rain...Mainly North. Snow Level Rising to 6-7000 Feet. 37/53 Mon (16 Nov): Mostly Cloudy and Mild. 43/57 Tue (17 Nov): Increasing Clouds. Rain Developing in the Afternoon. 44/54 Wed (18 Nov): Rain Turning to Showers. Snow Level Dropping to 3000 Feet. 42/49 Thu (19 Nov): Rain Developing With Mountain Snow. Snow Level 3000 Feet. 39/49 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Fri Nov 13 09:10:31 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Fri, 13 Nov 2009 11:10:31 -0600 Subject: [willamette-fcst] Forecast - Friday, November 13th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Friday, November 13th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 3:00pm. Straw stack burning is allowed, for dry stacks, from now until 3:00pm. Weather Discussion: A strong cold front, moving southeastward from the Gulf of Alaska, extended from near Seattle, to just east of Astoria and Newport, at mid-morning. Ahead of the front, steady rain and blustery southerly winds had pushed inland across the western Washington and northwestern Oregon. Between one-half and three-quarters of an inch of rain fell this morning along the Washington and northern Oregon coastlines, with between one-tenth and one-quarter of an inch falling in the interior of western Washington and north of about Salem in the Willamette Valley. Rain was just moving into the south valley at mid-morning. The ODA surface analysis showed southerly pressure-gradients, ahead of the cold front, across the Willamette Valley, with a shift to more westerly gradients, in the wake of the front, along the Washington and northern Oregon coastlines. South winds were gusting to about 25 mph throughout the Willamette Valley, at mid-morning. Southerly winds gusted to around 40 mph along the northern and central coast earlier this morning but had since turned westerly and were beginning to decrease. This is a quick-hitting system, with the steady precipitation shutting off with the cold frontal passage. Satellite and radar imagery both showed a well-defined back edge to the steady precipitation making its way over the northern Oregon coast range at mid-morning. The post-frontal break in rainfall will be brief, however, with cold instability showers, associated with an upper-level trough, already making their way onshore. ODOT road cameras showed snow had moved into the Cascades with snow-packed passes and temperatures in the 20s. The steady rain and mountain snow will end over the next couple of hours, front northwest to southeast, across western Oregon. Gusty southerly winds will turn westerly and back off just a bit by midday. Showers will mix with snow in the higher foothills of the Cascades, with cold air aloft dropping the snow level from about 2500 feet to around 1500 feet. Valley highs will struggle into the upper 40s, even with a few sunbreaks. Surface Winds: S 10-20 G25 this morning, WNW 10-20 G25 this afternoon. Transport Winds: S 25 this morning, WNW 25 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 4000 feet. Ventilation index 100. High Temperature: Salem\'s high temperature today will be near 49. Humidities: Minimum relative humidity will be near 56%. Sunrise/Sunset: Salem sunset tonight: 4:45pm; sunrise tomorrow: 7:09am. Extended Outlook: Showers will taper off this evening, as the upper-level trough slides east of the Cascades. Cooling surface temperatures will also help to stabilize the air mass. Partial clearing and cold air aloft may allow valley temperatures to locally drop below the freezing mark, with areas of fog forming. That will make for tricky travel overnight, with wet road surfaces possibly becoming icy, in places. Use caution, if you plan to be out driving tonight or early Saturday morning. Some sunbreaks are possible Saturday, with a warm front forecast to increase clouds across northwestern Oregon by Saturday evening. Rain is likely across western Washington and northwestern Oregon by Sunday morning, with not much rain south of about Eugene. The snow level will rise sharply Sunday, to 6-7000 feet, in the Oregon Cascades. The warm front is forecast to push north of the region by Sunday night with rain tapering off. Temperatures should be quite mild Monday and Tuesday, ahead of a cold front forecast to come onshore Tuesday evening. More valley rain and mountain snow is forecast for the second half of next week. Sat (14 Nov): Areas of AM Fog. Increasing Clouds. Snow Level Rising to 5000 Feet. 32/48 Sun (15 Nov): Light Rain...Mainly North. Snow Level Rising to 6-7000 Feet. 37/53 Mon (16 Nov): Mostly Cloudy and Mild. 43/57 Tue (17 Nov): Increasing Clouds. Rain Developing by Evening. 44/54 Wed (18 Nov): Rain Turning to Showers. Snow Level Dropping to 3000 Feet. 42/49 Thu (19 Nov): Rain and Windy. Mountain Snow. Snow Level 3-4000 Feet. 39/49 Fri (20 Nov): Showers. Snow Level 3000 Feet. 39/49 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Mon Nov 16 09:07:40 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Mon, 16 Nov 2009 11:07:40 -0600 Subject: [willamette-fcst] Forecast - Monday, November 16th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Monday, November 16th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed from now until 2:30pm. Weather Discussion: Most of the rain stayed north of the region over the weekend with generally less than one-tenth of an inch falling in the Willamette Valley. After a mostly dry Saturday, a warm front brought some very light rain at times to the Willamette Valley on Sunday, with high temperatures recovering to near-normal. The north coast received between one-third and three-quarters of an inch of rain, but only sprinkles fell on the central and south coast, and across the southwestern interior. Oregon is in the warm-sector of an impressive storm system this morning. Satellite imagery showed the leading edge of a broad band of clouds extending from southern British Columbia, across Washington and western Oregon this morning. The solid cloud-shield extended several hundred miles offshore. Doppler radar showed rain across all of western Washington and extending south into extreme northwestern Oregon. Some sprinkles were also making it over the Cascades, into east-central Washington. A strengthening surface low-pressure area was headed for the northern tip of Vancouver Island, British Columbia...generating strong southerly pressure-gradients, ahead of the cold front, across western Washington and western Oregon. Southerly winds were gusting to between 50 and 65 mph from the southern Washington Coast to the central Oregon Coast and 25-35 mph across the interior of western Washington and northwestern Oregon...including the Willamette Valley. Those southerly winds were ushering mild air across the region, with the freezing levels over Salem and Medford were measured at 7800 and 11,100 feet respectively this morning. Western Oregon temperatures were in the low to mid 50s this morning. The offshore cold front will not make much eastward progrees today, as waves of low-pressure form along it and make their way towards Vancouver Island. That will maintain the mild but brisk southerly winds today and tonight across western Washington and western Oregon. The National Weather Service has issued a high wind warning, through tonight, for the Oregon Coast, where southerly winds will continue to gust over 60 mph and may locally top out as high as 90 mph tonight across exposed headlands on the north coast. The Willamette Valley will have a blustery but mild day, with the bulk of the rain holding off until tonight, as the cold front finally makes it closer to the coastline. Surface Winds: S 15-25 G35 this morning, S 15-25 G35 this afternoon. Transport Winds: S 40 this morning, S 40 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 80. High Temperature: Salem\'s high temperature today will be near 57. Humidities: Minimum relative humidity will be near 40%. Sunrise/Sunset: Salem sunset tonight: 4:42pm; sunrise tomorrow: 7:13am. Extended Outlook: The strong cold front is forecast to slowly sweep across western Oregon Tuesday morning, with significant rain and blustery conditions expected in the Willamette Valley. The steady rain will likely turn showery Tuesday afternoon, with southerly winds turning more southwesterly and decreasing. The snow level will start out near 6000 feet, Tuesday morning, and rapidly drop to near 2500 feet, in the wake of the cold front, by Tuesday night. Showers will continue through most of Wednesday, with another weather system forecast to increase the rain and wind across western Oregon Thursday. Snow levels will climb back to near or above the Cascade passes by Thursday afternoon, as the cold front nears the coastline. Rain will turn to showers Friday, with the cold front likely pushing east of the Cascades by evening. The snow level will drop back to around 2500 feet by Friday night. Showers will continue Saturday, with yet another weather system forecast to come onshore Saturday night. Showers will taper off Sunday with a possible dry day Monday, as a ridge of high pressure begins building over the region. Tue (17 Nov): Rain and Blustery South Winds. Snow Level Dropping to 2500 Feet Late. 47/51 Wed (18 Nov): Showers. Snow Level 2500-3000 Feet. 38/49 Thu (19 Nov): Increasing Rain and Blustery. Snow Level Rising to 4-5000 Feet. 42/51 Fri (20 Nov): Rain Turning to Showers. Snow Level Dropping to 2500 Feet. 41/49 Sat (21 Nov): Showers. Snow Level 2500-3000 Feet. 39/48 Sun (22 Nov): Rain Turning to Showers. Snow Level near 3000 Feet. 42/49 Mon (23 Nov): Partly Sunny. 40/51 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 17 09:00:37 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 17 Nov 2009 11:00:37 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 17th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Tuesday, November 17th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed, for dry stacks, from now until 2:30pm. Weather Discussion: A strong cold front stalled just off the Washington and northern Oregon coastlines Monday, as low-pressure areas formed along the front and moved into the northern tip of Vancouver Island, British Columbia. That produced strong southerly pressure-gradients, ahead of the associated cold front, across western Washington and western Oregon for about 24 hours, until the cold front finally pushed inland early this morning. Southerly winds gusted to around 90 mph Monday afternoon and evening at exposed coastal headlands and in the higher elevations of the Oregon coast range. Waldport recorded a gust of 95 mph at 11:09 p.m. Monday and Garibaldi had a gust of 89 mph at 4 p.m. Monday. Many locations along the southern washington and Oregon coastlone recorded gusts between 50 and 75 mph. southerly winds also picked up in the Willamette Valley Monday evening, with gusts to around 45 mph. A comprehensive list of peak wind gusts at various coastal and valley locations is available from the National Weather Service at: http://www.wrh.noaa.gov/total_forecast/getprod.php?wfo=pqr&pil=PNS&sid=PQR&version=0 Heavy rain began falling late Monday morning, on the northern Oregon Coast and coastal range, and continued throughout the day. Over 4 inches of rain locally fell in the northern Oregon coast range with more than 3 inches falling in Astoria. Rainfall amounts tapered off to the south and east, but Tillamook received just over 1 1/2 inches and Newport just under one inch. About three-quarters of an inch feel in North Bend and about one-quater of an inch in Brookings. Rainfall increased Monday night in the Willamette Valley with most areas picking up between one-third and one-half inch by early this morning. Some locations in the northern Cascade foothills received more than an inch of rain overnight. The heavy rain and high surf combined to caused some coastal flooding and tidal overflow. Flood warnings have been dropped for the Nehalem River, but a coastal flood advisory remains in effect until 3 p.m., for minor tidal overflow, along the northern Oregon Coast. A high surf advisory remains in effect until 6 p.m. for the northern Oregon Coast. The cold front was pushing across central Oregon at mid-morning, with the steady rain tapering off and winds relaxing across western Oregon. Southerly wind gusts were generally around 20 mph or less west of the Cascades, with gusts to near 40 mph across central and eastern Oregon. A cold upper-level trough will move onshore today, bring frequent showers, a slight chance of thunderstorms, and rapidly lowering snow levels. ODOT road cameras showed that the rain over the passes had turned to snow, by mid-morning, and was beginning to accumulate. Expect winter driving conditions over the mountain passes today and tonight, with the snow level dropping to near 2500 feet. Most valley locations were in the mid 40s this morning and will struggle to reach 50 degrees this afternoon. Surface Winds: SSW 7-15 G22 this morning, SSW 5-15 G20 this afternoon. Transport Winds: SSW 22 this morning, SSW 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 44. High Temperature: Salem\'s high temperature today will be near 51. Humidities: Minimum relative humidity will be near 63%. Sunrise/Sunset: Salem sunset tonight: 4:41pm; sunrise tomorrow: 7:14am. Extended Outlook: Showers will continue through most of Wednesday, with another wet and quite windy weather system forecast to move onshore late Thursday into Friday morning. Snow levels will climb back to near or above the Cascade passes by Thursday afternoon, as the cold front nears the coastline. Rain will turn to showers Friday, with the cold front likely pushing east of the Cascades by evening. The snow level will drop back to around 2500 feet by Friday night. Showers will continue Saturday, with yet another weather system forecast to come onshore Saturday night. That will be a colder system, with possibly heavy snow in the Cascades. Showers will likely taper off Sunday afternoon, with a warm front now slated to spread more rain across western Oregon Monday...along with rising snow levels. We may get a break from the rain next Tuesday, but that is getting beyond the range of the computer models with this type of weather pattern. Tomorrow (18 Nov): Showers. Snow Level 2500-3000 Feet. 40/49 Thu (19 Nov): Increasing Rain and Blustery. Snow Level Rising to 4-5000 Feet. 42/55 Fri (20 Nov): Rain Turning to Showers. Snow Level Dropping to 2500 Feet. 41/49 Sat (21 Nov): Showers. Snow Level 2500-3000 Feet. 39/48 Sun (22 Nov): Rain and Mountain Snow...Turning to Showers. Snow Level near 3000 Feet. 42/49 Mon (23 Nov): Rain. Snow Level Rising to 5-6000 Feet. 42/53 Tue (24 Nov): Partly Sunny. 40/51 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 17 12:00:20 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 17 Nov 2009 14:00:20 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 17th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Tuesday, November 17th, 2009 at 12:00pm. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed, for dry stacks, from now until 2:30pm. Weather Discussion: A slow-moving cold front produced areas of heavy rain and strong southerly winds across western Washington and western Oregon Monday through early this morning. Southerly winds gusted to around 90 mph Monday afternoon and evening at exposed coastal headlands and in the higher elevations of the Oregon coast range. The strnogest reported gust was 98 mph, in Newport, late Monday evening. Cape Foul Weather and Waldport both recorded gusts of 95 mph, and Garibaldi had a gust of 89 mph. Many locations along the southern washington and Oregon coastlines recorded gusts between 50 and 75 mph. Southerly winds moved into the Willamette Valley Monday night, with gusts between 40 and 50 mph. Similar wind gusts moved into the northern Oregon Cascades early this morning. There were reports of downed trees and some wind damage to structures along the coast. Some power outages were reported from the coast to the northern Willamette Valley. A updated list of peak wind gusts, and damage reports, from various southern Washington and Oregon locations, is available from the National Weather Service at: http://www.wrh.noaa.gov/images/nwscwi/officenames/wfo_portland.jpg Heavy rain began falling late Monday morning, on the northern Oregon Coast and coastal range, and continued through early this morning. Over 4 inches of rain fell in sections of the northern Oregon coast range with more than 3 inches recorded in Astoria. The rain spread south and east Monday night, with the central and south coast getting 1-2 inches of rain by late this morning. The rain and strong southerly winds moved into the Willamette Valley Monday night, with most of the valley picking up about one-half inch of ran by late this morning. Some northern Cascade foothill locations received 1 1/2 inches of rain. The heavy rain and high surf combined to caused some coastal flooding and tidal overflow. Flood warnings have been dropped for the Nehalem River, but a coastal flood advisory remains in effect until 3 p.m., for minor tidal overflow, along the northern Oregon Coast. A high surf advisory remains in effect until 6 p.m. for the northern Oregon Coast. The cold front, and strongest winds, were pushing into eastern Oregon late this morning, where southerly winds were gusting to around 30 mph. The front lost a lot of moisture, as it crossed over the Cascades, with mainly just a lot a cloudiness and breezy conditions making it into central and eastern Oregon. Southerly wind gusts were generally in the 10-20 mph range west of the Cascades, with temperatures ranging from the mid 40s to near 50. Satellite imagery showed some clearing, in the immediate wake of the cold front, across western Washington and northwestern Oregon, late this morning. However, a cold upper-level trough was evident just off the Washington and northern Oregon coastlines. As that moves onshore later today and tonight, showers will increase across the region with a slight chance of thunderstorms. Valley highs will struggle to hit the low 50s this afternoon. Snow levels dropped, in the Cascades, along the back edge of the cold front, with snow accumulating over the passes late this morning. There may be a brief break in the snowfall early this afternoon, before the instability showers drop the snow level further late this afternoon and tonight. Significant snow accumulations are likely over the mountain passes down to as low at 2500 feet. Surface Winds: SSW 5-15 G20 this afternoon. Transport Winds: SSW 20 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 44. High Temperature: Salem\'s high temperature today will be near 51. Humidities: Minimum relative humidity will be near 63%. Sunrise/Sunset: Salem sunset tonight: 4:41pm; sunrise tomorrow: 7:14am. Extended Outlook: Showers will continue through most of Wednesday, with another wet and quite windy weather system forecast to move onshore late Thursday into Friday morning. Snow levels will climb back to near or above the Cascade passes by Thursday afternoon, as the cold front nears the coastline. Rain will turn to showers Friday, with the cold front likely pushing east of the Cascades by evening. The snow level will drop back to around 2500 feet by Friday night. Showers will continue Saturday, with yet another weather system forecast to come onshore Saturday night. That will be a colder system, with possibly heavy snow in the Cascades. Showers will likely taper off Sunday afternoon, with a warm front now slated to spread more rain across western Oregon Monday...along with rising snow levels. We may get a break from the rain next Tuesday, but that is getting beyond the range of the computer models with this type of weather pattern. Tomorrow (18 Nov): Showers. Snow Level 2500-3000 Feet. 40/49 Thu (19 Nov): Increasing Rain and Blustery. Snow Level Rising to 4-5000 Feet. 42/55 Fri (20 Nov): Rain Turning to Showers. Snow Level Dropping to 2500 Feet. 41/49 Sat (21 Nov): Showers. Snow Level 2500-3000 Feet. 39/48 Sun (22 Nov): Rain and Mountain Snow...Turning to Showers. Snow Level near 3000 Feet. 42/49 Mon (23 Nov): Rain. Snow Level Rising to 5-6000 Feet. 42/53 Tue (24 Nov): Partly Sunny. 40/51 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Wed Nov 18 09:12:25 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Wed, 18 Nov 2009 11:12:25 -0600 Subject: [willamette-fcst] Forecast - Wednesday, November 18th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Wednesday, November 18th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 4:30pm. Straw stack burning is allowed from now until 4:30pm. Weather Discussion: The strong cold front that moved across western Oregon Tuesday morning had advanced eastward into Montana and Idaho by this morning. In it\'s wake, a cool upper-level trough produced scattered showers across western Oregon Tuesday and Tuesday night. Colder air aloft had dropped the freezing over Salem to just 3100 feet by early this morning, with a few showers still falling across northwestern Oregon. ODOT road cameras showed snow-packed Cascade passes but just wet pavement over the coastal range passes. Partial clearing allowed areas of valley fog to form in southwestern Oregon, where temperatures locally dropped to near the freezing mark. There was enough instability in the atmosphere to keep the air stirred up over the Willamette Valley during the night, so fog was not able to form. Skies were partly sunny at mid-morning across northwestern Oregon, but Doppler radar was still showing a few showers rotating onshore, in a southwesterly flow aloft. Satellite imagery showed another impressive-looking storm system approaching the coastline this morning. The leading edge of the cloud-shield, associated with a warm front, was just off the Washington Coast. Solid cloud-cover extended weasward, to the low-pressure center, about 500 miles west of Vancouver Island, British Columbia. The frontal system is forecast to very slowly progress eastward, as waves of low-pressure develop along it and rotate northeastward towards Vancouver Island. That is a similar weather pattern to the one that brought heavy rain and strong winds to the coast and northwestern Oregon earlier this week. The bulk of the moisture, from the approaching frontal system, is forecast rotate into western Washington and southern British Columbia over the next 24 hours. However, the frontal boundary may sag just far enough south and east to bring heavy rain back to the extreme northwestern tip of Oregon by tonight. South-southeasterly pressure gradients will be increasing across western Oregon, with strong winds likely developing along the Oregon Coast by this evening. The National Weather Service has issued a High Wind Warning for later this afternoon and tonight along the Oregon Coast, but winds are not expected to be as strong with this system as they were on Monday. Still, south winds could locally gust to around 70 mph over exposed headlands and along beaches. A High Surf Advisory had also been issued for this evening through Thursday morning. Clouds and south-southeasterly winds will increase across the Willamette Valley this afternoon, but not much rainfall, if any, is expected until Thursday morning east of the coastal range. After a lingering shower or two this morning, the beat chance for rain, later today, will be in the north valley. Even with increasing south-southeasterly winds, temperatures will remain below normal across most of western Oregon today, due to the cool air aloft and increasing cloud-cover. Willamette Valley temperatures were only in the upper 30s and low 40s at mid-morning and will slowly climb all day...likely peaking near 50 degrees around midnight. Surface Winds: SSE 7-15 G20 this morning, SSE 10-15 G25 this afternoon. Transport Winds: SSW 20 this morning, S 25 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 50. High Temperature: Salem\'s high temperature this afternoon will be near 49. Low 50s are possible tonight. Humidities: Minimum relative humidity will be near 65%. Sunrise/Sunset: Salem sunset tonight: 4:40pm; sunrise tomorrow: 7:15am. Extended Outlook: Waves of low-perssure will continue to form along the offshore frontal boundary on Thursday, with the main precipitation zone slowly sagging south and east...likely making it into extreme northwestern Oregon. Strong south winds will continue along the coast, where the National Weather Service has issued a High Wind Watch for all day Thursday. Oregon will be in the warm-sector of the storm, with blustery south winds lifting Willamette Valley temperatures into the mid 50s. The freezing level should climb to around 6000 feet, with just a chance of light rain or snow making it as far east as the Cascades. The cold front is forecast to finally come onshore Thursday night and slowly progress across western Oregon Friday. Rainfall could be locally heavy, especially along the coast and in the coastal range. The strong winds will continue until the front moves east of the region Friday afternoon, and the steady rain turns to showers. The snow level will drop back to around 2500 feet by Friday night with accumulating snow over the mountain passes. Showers will taper off Saturday, with yet another weather system forecast to come onshore Saturday evening. That will be a colder system, with possibly heavy snow in the Cascades. Showers will taper off Sunday afternoon. A weaker system is slated to spread more rain across western Oregon Monday...along with rising snow levels. We may get a break from the rain next Tuesday and Wednesday. Tomorrow (19 Nov): Blustery and Warmer. Chance of Rain...Mainly North. 44/55 Fri (20 Nov): Rain and Windy...Turning to Showers. Snow Level Dropping to 2500 Feet. 45/50 Sat (21 Nov): Showers Early...Rain and Wind Late. Snow Level 3-4000 Feet. 39/48 Sun (22 Nov): Showers. Snow Level near 3000 Feet. 40/49 Mon (23 Nov): Rain. Snow Level Rising to 5-6000 Feet. 42/53 Tue (24 Nov): Partly Sunny. 40/53 Wed (25 Nov): Partly Sunny. 40/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 19 09:10:48 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 19 Nov 2009 11:10:48 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 19th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Thursday, November 19th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed from now until 2:30pm. Weather Discussion: An active frontal boundary stalled over western Washington and northwestern Oregon Wednesday night. Over one inch of rain fell overnight along sections of the northern Oregon Coast, the northern coastal range, and the over western slopes of the extreme northern Oregon Cascades. The heaviest rains, though, fell further north, across western Washington. The central Washington Coast picked up around two inches of rain, with more than three inches falling along the northern Washington Coast. Less than one-quarter of an inch of rain fell over the Willamette Valley, with the south valley only picking up a few hundredths of an inch. A fairly strong low-pressure center tracked well to the northwest of the region, moving inland this morning north of Vancouver Island, British Columbia. It was still close enough to bring strong southerly winds to the coast and blustery conditions to the Willamette Valley overnight. Winds gutsed between 50 and 60 mph along most of the central and northern Oregon Coast overnight, with gusts to 35 mph in the Willamette Valley. The southerly winds held minimum temperatures mostly in the mid to upper 40s in the Willamette Valley and low to mid 50s along the coast. The frontal system is forecast to reactivate and push slightly north today, as another wave of low-pressure develops along the front, well offshore. This low-pressure center is also forecast to track northeastward, moving inland just north of Vancouver Island, British Columbia late tonight. That will increase the rainfall along the front, with the bulk of the moisture staying north and west of Oregon, until late tonight, when the cold front finally comes onshore. Southerly pressure gradients will be increasing across western Oregon today, so the National Weather Service has issued a High Wind Warning, valid until midnight, for the Oregon Coast. South winds were gusting from 50-60 mph along the northern and central coast this morning and will likely increase to as high as 75 mph, over exposed headlands and beaches, this afternoon and evening. Southerly winds in the Willamette Valley will likely continue to gust as high as 35 mph throughout the day and into this evening Oregon will be in the warm-sector of the storm, with blustery south winds lifting Willamette Valley temperatures into the mid to upper 50s this afternoon. The freezing level over Salem was measured at 7000 feet this morning and may rise slightly more this afternoon. Rainfall may be locally heavy over the extreme northwestern corner of the state today but should be light elsewhere over western Oregon. The southern Willamette Valley may not see any rain at all. Surface Winds: S 15-25 G35 this morning, S 15-25 G35 this afternoon. Transport Winds: S 35 this morning, S 35 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 3000 feet. Ventilation index 105. High Temperature: Salem\'s high temperature today will be near 58. Humidities: Minimum relative humidity will be near 45%. Sunrise/Sunset: Salem sunset tonight: 4:39pm; sunrise tomorrow: 7:17am. Extended Outlook: The cold front is forecast to finally come onshore tonight and progress across western Oregon Friday morning. Rainfall could be locally heavy, especially along the coast and in the coastal range, through Friday morning. Strong southerly winds will turn more southwesterly and begin decreasing, after the front passes through Friday morning. The steady rain will turn to showers Friday afternoon, with the snow level dropping back to around 2500 feet by Friday night. Accumulating snow is expected over the mountain passes by Friday evening. Showers will taper off Saturday, with yet another weather system forecast to come onshore Saturday evening. That will be a colder system, with possibly heavy snow in the Cascades. Showers will taper off Sunday afternoon. A weaker system is slated to spread more rain across western Oregon Monday...along with rising snow levels. We may get a break from the rain next Tuesday and Wednesday. A wet pattern is forecast to return about next Thursday. Fri (20 Nov): Rain and Windy...Turning to Showers. Snow Level Dropping to 2500 Feet. 45/50 Sat (21 Nov): Showers Early...Rain and Wind Late. Snow Level 3-4000 Feet. 39/48 Sun (22 Nov): Showers. Snow Level near 3000 Feet. 40/49 Mon (23 Nov): Light Rain Likely. Snow Level Rising to 5-6000 Feet. 42/54 Tue (24 Nov): Areas of AM Fog...Partly Sunny and Mild. 40/53 Wed (25 Nov): Areas of AM Fog...Partly Sunny and Mild. 38/53 Thu (26 Nov): Rain Likely. Snow Level 6000 Feet. 43/51 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 19 09:14:04 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 19 Nov 2009 11:14:04 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 19th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. ...Corrected Wording at end of Weather Discussion... Issued: Thursday, November 19th, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed from now until 2:30pm. Weather Discussion: An active frontal boundary stalled over western Washington and northwestern Oregon Wednesday night. Over one inch of rain fell overnight along sections of the northern Oregon Coast, the northern coastal range, and the over western slopes of the extreme northern Oregon Cascades. The heaviest rains, though, fell further north, across western Washington. The central Washington Coast picked up around two inches of rain, with more than three inches falling along the northern Washington Coast. Less than one-quarter of an inch of rain fell over the Willamette Valley, with the south valley only picking up a few hundredths of an inch. A fairly strong low-pressure center tracked well to the northwest of the region, moving inland this morning north of Vancouver Island, British Columbia. It was still close enough to bring strong southerly winds to the coast and blustery conditions to the Willamette Valley overnight. Winds gutsed between 50 and 60 mph along most of the central and northern Oregon Coast overnight, with gusts to 35 mph in the Willamette Valley. The southerly winds held minimum temperatures mostly in the mid to upper 40s in the Willamette Valley and low to mid 50s along the coast. The frontal system is forecast to reactivate and push slightly north today, as another wave of low-pressure develops along the front, well offshore. This low-pressure center is also forecast to track northeastward, moving inland just north of Vancouver Island, British Columbia late tonight. That will increase the rainfall along the front, with the bulk of the moisture staying north and west of Oregon, until late tonight, when the cold front finally comes onshore. Southerly pressure gradients will be increasing across western Oregon today, so the National Weather Service has issued a High Wind Warning, valid until midnight, for the Oregon Coast. South winds were gusting from 50-60 mph along the northern and central coast this morning and will likely increase to as high as 75 mph, over exposed headlands and beaches, this afternoon and evening. Southerly winds in the Willamette Valley will likely continue to gust as high as 35 mph throughout the day and into this evening Oregon will be in the warm-sector of the storm, with blustery south winds lifting Willamette Valley temperatures into the mid to upper 50s this afternoon. The freezing level over Salem was measured at 7000 feet this morning and may rise slightly more this afternoon. Rainfall may be locally heavy over the extreme northwestern corner of the state today but should be light elsewhere over western Oregon. The southern Willamette Valley may not see any rain until later this evening. Surface Winds: S 15-25 G35 this morning, S 15-25 G35 this afternoon. Transport Winds: S 35 this morning, S 35 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 3000 feet. Ventilation index 105. High Temperature: Salem\'s high temperature today will be near 58. Humidities: Minimum relative humidity will be near 45%. Sunrise/Sunset: Salem sunset tonight: 4:39pm; sunrise tomorrow: 7:17am. Extended Outlook: The cold front is forecast to finally come onshore tonight and progress across western Oregon Friday morning. Rainfall could be locally heavy, especially along the coast and in the coastal range, through Friday morning. Strong southerly winds will turn more southwesterly and begin decreasing, after the front passes through Friday morning. The steady rain will turn to showers Friday afternoon, with the snow level dropping back to around 2500 feet by Friday night. Accumulating snow is expected over the mountain passes by Friday evening. Showers will taper off Saturday, with yet another weather system forecast to come onshore Saturday evening. That will be a colder system, with possibly heavy snow in the Cascades. Showers will taper off Sunday afternoon. A weaker system is slated to spread more rain across western Oregon Monday...along with rising snow levels. We may get a break from the rain next Tuesday and Wednesday. A wet pattern is forecast to return about next Thursday. Fri (20 Nov): Rain and Windy...Turning to Showers. Snow Level Dropping to 2500 Feet. 45/50 Sat (21 Nov): Showers Early...Rain and Wind Late. Snow Level 3-4000 Feet. 39/48 Sun (22 Nov): Showers. Snow Level near 3000 Feet. 40/49 Mon (23 Nov): Light Rain Likely. Snow Level Rising to 5-6000 Feet. 42/54 Tue (24 Nov): Areas of AM Fog...Partly Sunny and Mild. 40/53 Wed (25 Nov): Areas of AM Fog...Partly Sunny and Mild. 38/53 Thu (26 Nov): Rain Likely. Snow Level 6000 Feet. 43/51 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Thu Nov 19 11:58:19 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Thu, 19 Nov 2009 13:58:19 -0600 Subject: [willamette-fcst] Forecast - Thursday, November 19th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. NOON UPDATE Issued: Thursday, November 19th, 2009 at 12:00pm. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from now until 2:30pm. Straw stack burning is allowed from now until 2:30pm. Weather Discussion: An active frontal system, stalled out over western Washington and extreme northwestern Oregon, is slowly pushing to the north today. Heavy rain continued to fall this morning, with an additional inch coming down, since 4 a.m., along the coast, from Astoria, OR to Hoquiam, WA. About one-half inch of rain has fallen, in the last 8 hours, across much of the interior of western Washington, including the Seattle area. Southerly winds are also increasing, with another low-pressure center forming, along the front, about 500 miles off the northern Oregon Coast. It is forecast to track northeastward and come inland just north of Vancouver Island, British Columbia by late tonight. The National Weather Service has issued a High Wind Warning, valid until midnight, for the Oregon Coast. South winds were gusting from 40-50 mph along the northern and central coast late this morning, with some local gusts over 60 mph. South wind gusts will likely increase to as high as 75 mph, over exposed headlands and beaches, this afternoon and evening. In the Willamette Valley, southerly winds will continue gusting to around 35 mph this afternoon and evening. Oregon is in the warm-sector of the storm today, with the blustery southerly winds making for mild temperatures. Most of western Oregon was in the mid 50s, with highs today likely climbing into the upper 50s. Some 60-degree readings are possible, which would be about 10 degrees above normal. The freezing level over Salem was measured at 7000 feet this morning and may rise slightly more this afternoon. ODOT road cameras showed wet pavement over the Cascade passes late this morning, with temperatures well above freezing. Doppler radar was showing the main area of rainfall starting to lift north of Oregon at midday, with surface reports confirming a decrease in rainfall intensity along the extreme north coast. This afternoon will be cloudy, windy, and mild across Oregon, with some light rain still likely along the north coast. The remainder of western Oregon will only have a chance of light rain...mainly north. The break from the rain will be brief, with a cold front forecast to move onshore tonight. Rain will spread back onto the entire length of the Oregon Coast overnight, with continued strong southerly winds. Surface Winds: S 15-25 G35 this afternoon. Transport Winds: S 35 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 3000 feet. Ventilation index 105. High Temperature: Salem\'s high temperature today will be near 58. Humidities: Minimum relative humidity will be near 40%. Sunrise/Sunset: Salem sunset tonight: 4:39pm; sunrise tomorrow: 7:17am. Extended Outlook: The cold front is forecast to finally come onshore during the pre-dawn hours Friday. There will likely be a few hours of locally heavy rainfall, across all of western Oregon, with the cold frontal passage. However, it is not expected to stall, while moving across the region, so total rainfall amounts should not become excessive. The greatest rainfall totals will likely be along the immediate coastline and in the coastal range. Strong southerly winds overnight will turn more southwesterly, and begin decreasing, after the frontal passage Friday morning. The rainfall will turn showery Friday afternoon, with the snow level dropping back to around 2500 feet by Friday night. Accumulating snow is expected over the mountain passes, beginning Friday afternoon and continuing through Friday night. Showers will taper off Saturday, with yet another weather system forecast to renew the steady rain, and increase the southerly winds, across western Oregon Saturday evening. Snow levels will only climb to around 4-5000 feet, ahead of the cold front, so significant snow accumulation is likely, over the Cascade passes, Saturday and Saturday night. The steady preciptation will turn to showers, in the wake of the cold front, on Sunday, with the snow level dropping back to around 3000 feet. A warm front is slated to spread more rain across western Oregon Monday...along with rising snow levels. A weak cold front will follow Monday evening, but the snow level should only drop back to around 5000 feet Monday night. There may be a few lingering showers Tuesday, but a building upper-level ridge of high pressure may send the next warm front just north of Oregon. That would give the state a break from the rain, along with continued mild temperatures. The first in a new series of storms is forecast to come onshore next Thursday. Fri (20 Nov): Rain and Windy...Turning to Showers. Snow Level Dropping to 2500 Feet. 45/50 Sat (21 Nov): Showers Early...Increasing Rain and Wind Late. Snow Level 3-4000 Feet. 39/47 Sun (22 Nov): Showers. Snow Level near 3000 Feet. 40/49 Mon (23 Nov): Rain Likely. Snow Level Rising to 5-6000 Feet. 42/54 Tue (24 Nov): Mostly Cloudy. Slight Chance of Rain North. Mild. 41/53 Wed (25 Nov): Areas of AM Fog...Partly Sunny and Mild. 38/55 Thu (26 Nov): Rain Ceveloping. Snow Level 6000 Feet. 43/52 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Mon Nov 23 09:16:26 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Mon, 23 Nov 2009 11:16:26 -0600 Subject: [willamette-fcst] Forecast - Monday, November 23rd, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Monday, November 23rd, 2009 at 9:00am. Burn Advisory: Agricultural burning is allowed. Suggested burn times are from 11:00am until 2:30pm. Straw stack burning is allowed, for dry stacks, from 11:00am until 2:30pm. Weather Discussion: A potent storm system moved onshore Saturday evening, bringing another round of strong southerly winds to southwestern Washington and much of western Oregon Saturday night and early Sunday. Southerly wind gusts of 50-70 mph hit most of the Oregon Coast, with some beaches and exposed headlands getting gusts to around 90 mph. Mt. Hebo, in the north coast range, recorded a gust of 93 mph. Another usual windy spot, Cape Blanco, on the south coast, had a gust of 92 mph. Newport recorded gusts of 74 mph with Pacific City getting gusts to 70 mph. It also became quite windy in the Willamette Valley Saturday night, as the low-pressure center came inland and moved across western Washington. That is a favorable storm-track for strong winds in the western valleys. South winds gusted between 45 and 50 mph from southwestern Washington to the southern Willamette Valley. The Porland Airport recorded one of the stronger gusts in the Willamette Valley at 51 mph. Freezing levels remained low enough for heavy snow to fall in the mountains over the weekend. One to three feet of new snow fell in the northern and central Oregon Cascades, with the higher elevations on Mt. Hood seing the greatest totals. 17 inches of new snow fell as far south as Willamette Pass, with a foot of new snow over Santiam Pass. The snow, wind, and rain tapered off Sunday, as the cold front pushed east of the region. A transitory ridge of high pressure helped bring an end to the shower activity by Sunday evening, but the freezing level remained only in the 4-5000 foot range. A weak warm front was off of the Washington Coast this morning, with Doppler radar showing some light rain moving across mainly the northwestern section of the Evergreen State. Satellite imagery showed mostly cloudy skies across northwestern Oregon, at mid-morning, but there were no reports of rainfall. The ODA surface analysis showed southeasterly gradients beginning to increase across western Oregon, with SSE winds generally at 10 mph or less. Willamette Valley temperatures ranged from the freezing mark, in Eugene, to the low 40s in Salem. Coastal temperatures were in the low to mid 40s. Skies should remain mostly cloudy over the northwestern corner of Oregon today. Most of the rain, however, from the approaching warm front is forecast to stay north of Oregon. Some sprinkles may fall along the north coast and in the extreme northern Willamette Valley. After areas of morning fog, the central and southern valley will likely see some sunbreaks today. Warmer air aloft had lifted the freezing level over Medford to 9000 feet by early this morning, but the Salem freezing level was still at just 4100 feet. Freezing levels should continue to climb today, as a transitory upper-level ridge moves over the state. Willamette Valley highs should climb to around 50 degrees, which is normal for late November. Surface Winds: SSE 5-15 this morning, SSE 5-15 this afternoon. Transport Winds: S 15 this morning, S 17 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 2000 feet. Ventilation index 34. High Temperature: Salem\'s high temperature today will be near 51. Humidities: Minimum relative humidity will be near 66%. Sunrise/Sunset: Salem sunset tonight: 4:36pm; sunrise tomorrow: 7:22am. Extended Outlook: A weak cold front is forecast to sag southward, over extreme northern Oregon, tonight and early Tuesday, bringing an increasing chance of light rain...mainly to the northwestern corner of the state. High pressure is forecast to build back over the region Tuesday, with the chance of rain decreasing. Dry and mild conditions should prevail from late Tuesday through midday Thursday, with another weather system movning onshore Thanksgiving evening. The rain should turn to showers Friday, with snow over the mountain passes. Travel conditions are forecast to improve Sasturday and Sunday, as a ridge of high pressure brings dry and mild weather to the region. Tomorrow (24 Nov): Mostly Cloudy. Chance of Light Rain Early...Decreasing late. 40/52 Wed (25 Nov): Areas of AM Fog. Partly Sunny and Mild. 37/55 Thu (26 Nov): Rain Developing in the Evening. 39/54 Fri (27 Nov): Showers. Snow Level 3000 Feet. 39/49 Sat (28 Nov): Mostly Cloudy. 35/48 Sun (29 Nov): Mostly Cloudy. 36/50 Mon (30 Nov): Partly Sunny. 35/53 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Tue Nov 24 09:00:25 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Tue, 24 Nov 2009 11:00:25 -0600 Subject: [willamette-fcst] Forecast - Tuesday, November 24th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. Issued: Tuesday, November 24th, 2009 at 9:00am. Burn Advisory: Agricultural burning is not recommended. Stack burning is not allowed. Weather Discussion: A weak cold front sagged southward overnight and was falling apart over extreme northern Oregon this morning. Doppler radar and surface reports indicated some rain was falling along the northern Oregon Coast and inland as far south as the extreme northern Willamette Valley. The rain was falling moderately in the Astoria area, with over two-thirds of an inch coming down since midnight. The rainfall was much lighter inland, with Portland just picking up trace amounts so far today. The weak front is forecast to lift northward this afternoon, as a warm front, with an upper-level ridge of high pressure building over Oregon. The rain should taper off along the north coast by this afternoon, with dry conditions expected over the remainder of the state. Satellite imagery showed breaks in the clouds over much of the central and southern Willamette Valley at mid-morning. Temperatures were in the mild mid to upper 40s. With some sunbreaks again this afternoon, highs should climb into the low to mid 50s...above normal for late November. Surface Winds: SE 5-10 this morning, SE 5-10 this afternoon. Transport Winds: S 10 this morning, S 6 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1500 feet. Ventilation index 15. High Temperature: Salem\'s high temperature today will be near 56. Humidities: Minimum relative humidity will be near 45%. Sunrise/Sunset: Salem sunset tonight: 4:36pm; sunrise tomorrow: 7:23am. Extended Outlook: Dry and mild conditions should prevail from late Tuesday through midday Thursday, with another wet weather system moving onshore Thanksgiving afternoon. Steady rain should turn to showers Friday, with snow making for wintry travel over the mountain passes. Travel conditions are forecast to improve Saturday through Monday, with a ridge of high pressure bringing mostly dry and mild conditions to the region. Tomorrow (25 Nov): Areas of AM Fog. Partly Sunny and Mild. 39/56 Thu (26 Nov): Rain Developing in the Afternoon. 40/54 Fri (27 Nov): Showers. Snow Level 3000 Feet. 39/49 Sat (28 Nov): Mostly Cloudy. Chance of Sprinkles North. 35/48 Sun (29 Nov): Partly Sunny. 36/51 Mon (30 Nov): Partly Sunny. 35/53 Tue (01 Dec): Partly Sunny. 33/48 ODA Meteorologist weather at oda.state.or.us From willamette-fcst at listsmart.osl.state.or.us Wed Nov 25 08:47:48 2009 From: willamette-fcst at listsmart.osl.state.or.us (Willamette Valley Ag/Burning Forecast) Date: Wed, 25 Nov 2009 10:47:48 -0600 Subject: [willamette-fcst] Forecast - Wednesday, November 25th, 2009 Message-ID: Daily Smoke Management Forecast Oregon Department of Agriculture Smoke Management Program Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts. ...Next Update Scheduled for Monday, November 30th, 2009 at 9:00am... Issued: Wednesday, November 25th, 2009 at 8:45am. Burn Advisory: Agricultural burning is not recommended. Stack burning is not allowed. Weather Discussion: A transitory upper-level ridge of high pressure allowed fog to form overnight across much of the Willamette Valley. Visibilities this morning were locally less than one-quarter of a mile. Fortunately, temperature generally stayed just above freezing mark. A fairly impressive frontal system extends southwestward, from Vancouver Island, British Columbia, to about 300 miles off of the Oregon Coast this morning. The cloud-shield stretches all the way to just north of Hawaii. Doppler radar showed rain spreading across the extreme northwestern tip of Washington, with satellite imagery showing clouds extending across most of western Washington and as far south as the northwestern corner of Oregon. The front should remain north and west of Oregon today but will be close enough to help break up the fog by around midday. A mild southerly flow, both at the surface and aloft, will lift western Oregon temperatures well into the 50s again this afternoon, with some filtered sunshine. Salem\'s high Tuesday was 59 degrees, Corvallis hit 60. Normal valley high temperatures, for late November, are around 50 degrees. Surface Winds: SSE 3-8 this morning, SSE 5-10 this afternoon. Transport Winds: S 6 this morning, S 10 this afternoon. Atmospheric Ventilation Conditions: Maximum mixing height today will be near 1700 feet. Ventilation index 17. High Temperature: Salem\'s high temperature today will be near 56. Humidities: Minimum relative humidity will be near 53%. Sunrise/Sunset: Salem sunset tonight: 4:35pm; sunrise tomorrow: 7:24am. Extended Outlook: After areas of morning fog, clouds will increase across western Oregon Thanksgiving Day, as a cold front slowly sags southeastward into the state. Rain will spread, from northwest to southeast, across western Oregon by Thursday evening. Rain Thursday night should turn to showers Friday, with the snow level dropping to the Cascade passes. A warm front will bring lots of clouds Saturday, but the bulk of the rainfall should stay north of Oregon. Some light rain may spread as far south as the central Willamette Valley. The snow level will lift to near or above the Cascade passes by Saturday night. A building upper-level ridge of high pressure will bring dry and mild weather to the region Sunday, with areas of valley fog giving way to partly sunny skies. A cool weather system is forecast to drop southward, from the Gulf of Alaska, on Monday...possibly extending far enough south to bring rain and mountain snow back to much of Oregon. A dry and cool northwesterly flow aloft is forecast Tuesday and Wednesday, with valley minimums possibly dropping below the freezing mark. Tomorrow (26 Nov): Areas AM Fog. Rain Developing By Evening. 39/55 Fri (27 Nov): Showers...Decreasing Late. Snow Level Dropping to 3000 Feet. 40/48 Sat (28 Nov): Mostly Cloudy. Chance of Rain...Mainly North. 36/47 Sun (29 Nov): Areas of AM Fog. Partly Sunny in the Afternoon. 34/51 Mon (30 Nov): Chance of Rain...Mainly North. Snow Level Dropping to 3000 Feet. 36/46 Tue (01 Dec): Areas of AM Fog. Partly Sunny in the Afternoon. 32/48 Wed (02 Dec): Areas of AM Fog...Mainly South. Mostly Sunny in the Afternoon. 30/50 ODA Meteorologist weather at oda.state.or.us