From smi_west at listsmart.osl.state.or.us Mon Apr 18 13:58:24 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 18 Apr 2011 13:58:24 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, April 18, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 TUESDAY Upper level flow will be light west-northwesterly over the region on Tuesday with an upper level jet lying across the southern half of the state. Moisture is limited but the air mass remains cold for this time of year. This will produce high maximum mixing heights and good smoke dispersal conditions. OUTLOOK (WEDNESDAY - FRIDAY) The upper level jet slips south by Wednesday keeping cool conditions aloft over the region. Mixing heights will remain high for good smoke dispersal conditions. A weak disturbance in the upper flow will produce precipitation with the snow level down to around 3000 feet in the north to 4000 feet in the south. Transport winds will be mostly northwesterly except light and variable in the south. By Thursday an upper level disturbance swings in from the northwest and phases with a weak disturbance coming across the Pacific to carve out a trough over the Pacific Northwest. This will produce light precipitation most areas. The cool air mass will mean snow at higher elevations but also good smoke dispersal conditions. On Friday expect weak ridging aloft for dry weather but light and variable transport winds. A thermal trough develops in California and extends northward to off the Oregon coast for offshore flow many areas west of the Cascades. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 4000 - 5000 ft. Transport wind light and variable. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height above 5000 ft. Transport wind increases to N to NE at 8 - 12 mph. Surface wind increases to N to NE at 8 - 12 mph. EVENING Mixing height remains above 5000 ft. Transport wind similar to afternoon. Surface wind NNW to NE at 4 - 8 mph. Zone 605-611 (North Cascades): MORNING Mixing height 3700 - 4700 ft. Transport wind NW to NNE at 4 - 8 mph. Surface wind NW to NNE at 5 - 9 mph. AFTERNOON Mixing height above 5000 ft. Transport wind NNW to NE at 6 - 12 mph. Surface wind N to NE at 8 - 12 mph. EVENING Mixing height 1400 - 2400 ft. Transport wind NNE to NE at 8 - 12 mph. Surface wind N to NE at 6 - 10 mph. Zone 615-620 (South Coast Range): MORNING Mixing height 4000 - 5000 ft. Transport wind NNE to ENE at 9 - 15 mph. Surface wind NNE to ENE at 9 - 15 mph. AFTERNOON Mixing height above 5000 ft. Transport wind increases to N to NE at 6 - 12 mph. Surface wind N to NE at 8 - 12 mph. EVENING Mixing height 3500 - 4500 ft. Transport wind NNW to NNE at 8 - 12 mph. Surface wind NNW to NNE at 5 - 9 mph. Zone 616-623 (South Cascades): MORNING Mixing height 3800 - 4800 ft. Transport wind light and variable. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height above 5000 ft. Transport wind increases to W to NNW at 4 - 8 mph. Surface wind increases to WNW to NNW at 5 - 9 mph. EVENING Mixing height lowers below 1000 ft. Transport wind NW to N at 4 - 8 mph. Surface wind becomes light and variable and controlled by local terrain. OUTLOOK: WEDNESDAY Mixing height below 1000 ft early rising to 1600 to 2600 ft by late morning rising to 4300 to 5000 ft during the afternoon. In the Coast Range transport wind NNW to NNE at 5 - 9 mph during the morning becoming NW to NNW at 10 - 22 mph during the afternoon. In the Cascades transport wind WSW to WNW at 4 - 8 mph. Surface wind light and variable during the morning becoming WNW to NNW at 8 - 12 mph during the afternoon. THURSDAY Mixing height below 1000 ft early rising to 3200 to 4200 ft by late morning rising to 4400 to 5000 ft during the afternoon. Transport wind light and variable during the morning becoming NW to N at 4 - 8 mph during the afternoon. Surface wind light and variable. FRIDAY Mixing height below 1000 ft early rising to 1800 to 2800 ft by late morning rising to 3800 to 4800 ft during the afternoon. Transport wind light and variable. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Tuesday, April 19, 2011. ================================================================= Coast Range All Zones Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Cascades Zone 605, 606, and 622 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Verify transport winds away from SSRA if burning within 10 miles of the SSRA in Zone 605 and 606. Higher tonnage is possible south of T20S in Zone 606. Call the forecaster. East of R2W in Zone 622, use standard guidance matrix. (See section 5 below.) Zone 607 and 608 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 609, 610, 611, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Zone 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Tue Apr 19 14:15:49 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Tue, 19 Apr 2011 14:15:49 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Tuesday, April 19, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 WEDNESDAY Upper level charts show a broad trough over the eastern Pacific and the western US for Wednesday. An upper level jet cuts across the coastline into central California. This leaves Oregon on the cool side of the jet stream and air mass temperatures will remain well below average for this time of year. There will be only limited moisture available but showers are likely, especially south. The cold air aloft will help push mixing heights to high values and smoke dispersal conditions should be good. OUTLOOK (THURSDAY - SATURDAY) On Thursday an upper disturbance swings down from the northwest and phases with a disturbance moving westward across the Pacific to carve out a fairly sharp trough over the eastern Pacific and western US. This should bring rain or snow to most areas. The snow level will be down to about 2000 feet in the north and 3000 feet in the south. Smoke dispersal conditions will remain good. The upper disturbances move east on Friday allowing weak ridging over the region. Weather should be dry. Mixing heights will be suppressed slightly but smoke dispersal conditions remain fair to good. Low level flow will be offshore - northeast winds in the north, southeast winds in the south. The ridge moves east Saturday and a Pacific front moves in from the west. Rain reaches the coastline early in the day and spreads east with rainfall amounts ranging to above a half an inch. Expect fair to good smoke dispersal conditions Saturday. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 1700 - 2700 ft. Transport wind NNW to NE at 4 - 8 mph. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind increases to NW to NNW at 10 - 22 mph. Surface wind increases to NW to NNW at 9 - 15 mph. EVENING Mixing height 3300 - 4300 ft. Transport wind NW to NNW at 13 - 25 mph. Surface wind similar to afternoon. Zone 605-611 (North Cascades): MORNING Mixing height 1600 - 2600 ft. Transport wind light and variable. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind increases to WSW to NW at 4 - 8 mph. Surface wind increases to WSW to NW at 4 - 8 mph. EVENING Mixing height 1500 - 2500 ft. Transport wind similar to afternoon. Surface wind similar to afternoon. Zone 615-620 (South Coast Range): MORNING Mixing height 1700 - 2700 ft. Transport wind WNW to NNW at 4 - 8 mph. Surface wind NW to N at 5 - 9 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind WNW to NNW at 8 - 12 mph. Surface wind WNW to NNW at 6 - 12 mph. EVENING Mixing height 3000 - 4000 ft. Transport wind NW to N at 5 - 9 mph. Surface wind NW to N at 4 - 8 mph. Zone 616-623 (South Cascades): MORNING Mixing height 3800 - 4800 ft. Transport wind SW to W at 8 - 12 mph. Surface wind SW to W at 8 - 14 mph. AFTERNOON Mixing height above 5000 ft. Transport wind SSW to WSW at 4 - 8 mph. Surface wind SSW to WSW at 5 - 9 mph. EVENING Mixing height lowers below 1000 ft. Transport wind becomes light and variable. Surface wind becomes light and variable and controlled by local terrain. OUTLOOK: THURSDAY In the Coast Range mixing height 3300 to 4300 ft throughout the day. In the Cascades mixing height 1600 to 2600 ft during the morning rising to 4200 to 5000 ft during the afternoon. Transport wind WNW to NNW at 6 - 10 mph. Surface wind WNW to NNW at 4 - 8 mph during the morning becoming NW to NNW at 9 - 15 mph during the afternoon. FRIDAY In the Coast Range mixing height below 1000 ft early rising to 3300 to 4300 ft by late morning and through the afternoon. In the Cascades mixing height below 1000 ft early rising to 1600 to 2600 ft by late morning rising to 4200 to 5000 ft during the afternoon. Transport wind E to SE at 4 - 8 mph during the morning becoming light and variable during the afternoon. Surface wind E to SE at 4 - 8 mph during the morning becoming light and variable during the afternoon. SATURDAY Mixing height below 1000 ft during the morning rising to 3900 to 4900 ft during the afternoon. Transport wind SE to SSW at 6 - 12 mph during the morning becoming SSW to SW at 8 - 14 mph during the afternoon. Surface wind light and variable during the morning becoming SSE to SW at 4 - 8 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Wednesday, April 20, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Higher tonnage is possible south of Waldport in Zone 612. Call the forecaster. Zone 602, 603, and 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of T17S in Zone 603. Call the forecaster. Higher tonnage is possible south of T35S in Zone 620. Call the forecaster. Zone 615 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades All zones except Zone 610 and 611 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T15S through T20S in Zone 608 units should be 1000 tons or less, spaced 5 miles apart. Zone 610 and 611 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Siskiyous Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Wed Apr 20 14:30:40 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Wed, 20 Apr 2011 14:30:40 -0700 Subject: SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Wednesday, April 20, 2011 2:30 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 THURSDAY A very cool upper-level trough will remain over the Pacific Northwest, with a couple of embedded disturbances affecting the region. One system is forecast to cut across Washington and northern Oregon, while another exits southern Oregon. The northern system will not have a lot of moisture to work with but should bring scattered showers to the northern third of Oregon. The air aloft will be cold enough for these showers to fall as snow, down to about 1000 feet, in the early morning, before rising to around 2500 feet in the afternoon. The southern system could locally bring as much as .25 inches of precipitation to southwestern Oregon Wednesday night, before pushing eastward across south-central and southeastern Oregon on Thursday. Snow levels across southern Oregon will be around 3000 feet. A cool but drier northwesterly flow aloft will develop across all of western Oregon Thursday afternoon and begin to stabilize the air mass. The air aloft will remain unseasonably cool, so daytime heating should provide good mixing and enough instability for at least widely scattered afternoon showers, especially over higher terrain. Surface temperatures will remain about 10 degrees below normal with mostly northwesterly transport winds. OUTLOOK (FRIDAY-SUNDAY) A weak upper-level ridge of high pressure is forecast to bring generally dry and warmer conditions on Friday, with an undercutting westerly jet stream continuing to bring a slight chance of showers to northern California and higher terrain of extreme southern Oregon. After a cold start, partly to mostly sunny skies should warm afternoon surface temperatures close to normal. The freezing level will only rise to about 6000 feet north and 7000 feet south, so afternoon heating will provide good mixing. Transport winds will turn offshore. The ridge of high pressure is forecast to move over Idaho on Saturday with increasing westerly flow aloft over Oregon. The first in a series of potent weather systems will likely spread rain back into southwestern Oregon by afternoon and across all of western Oregon by evening. The snow level is forecast to drop to 5000 feet. Light morning transport winds will increase, from the southeast to south, with good afternoon mixing. A strengthening westerly jet stream will drive a strong cold front across western Oregon early Easter Sunday morning, followed by a cold and unstable upper-level trough. Morning rain and mountain snow will turn showery, in the afternoon, with the snow level dropping to 3000 feet north and 4000 feet south. Precipitation totals could locally exceed .50 inches. Mixing should be good with brisk southwesterly transport winds. 2. DISPERSION Zone 601-612 (North Coast Range and Cascades): MORNING Mixing height 3500 - 4500 ft. Transport wind WSW to WNW at 10 - 18 mph. Surface wind WSW to WNW at 8 - 12 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind WNW to NW at 10 - 20 mph. Surface wind W to NW at 6 - 10 mph. EVENING Mixing height 2000 - 3000 ft. Transport wind WNW to NNW at 9 - 15 mph. Surface wind similar to afternoon. Zone 615-623 (South Coast Range and Cascades): MORNING Mixing height 3000 - 4000 ft. Transport wind NW to N at 4 - 8 mph. Surface wind NW to N at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind similar to morning. Surface wind similar to morning. EVENING Mixing height 2000 - 3000 ft. Transport wind NNW to NNE at 6 - 10 mph. Surface wind similar to afternoon. OUTLOOK: FRIDAY Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind ENE to ESE at 4 - 8 mph. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 2200 to 3200 ft by late morning rising above 5000 ft during the afternoon. Transport wind SE to S at 8 - 12 mph during the morning becoming S to SSW at 12 - 24 mph during the afternoon. Surface wind ESE to S at 4 - 8 mph during the morning becoming SSE to SSW at 6 - 10 mph during the afternoon. SUNDAY Mixing height 3800 to 4800 ft during the morning rising above 5000 ft during the afternoon. Transport wind SSW to SW at 19 - 33 mph. Surface wind S to SW at 10 - 18 mph during the morning becoming SW to W at 9 - 15 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Thursday, April 21, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Zone 602, 603, and 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of the Siuslaw River in Zone 603. Call the forecaster. Higher tonnage is possible south of the Rogue River in Zone 620. Call the forecaster. Zone 615, 618, and 619 Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of the North Bend/Coos Bay SSRA. Zone 616 west of R8W Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S. Cascades Zone 605, 606, 607, 608, 609, 611, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T12S through T17S in Zone 608 units should be 1000 tons or less, spaced 5 miles apart. South of T30S in Zone 616 units should be 500 tons or less, spaced 5 miles apart. South of T30S in Zone 617 units should be 750 tons or less, spaced 5 miles apart. Zone 610 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 and 622 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Thu Apr 21 14:40:49 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Thu, 21 Apr 2011 14:40:49 -0700 Subject: SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Thursday, April 21, 2011 2:30 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 FRIDAY A weak upper-level ridge of high pressure is forecast to bring generally dry and warmer conditions. After a cold start, partly to mostly sunny skies should warm afternoon surface temperatures close to normal. The freezing level will only rise to about 6000 feet north and 7000 feet south, so afternoon heating will provide good mixing. Transport winds will turn offshore. A very weak disturbance, in a westerly jet stream directed at California, may increase clouds over the extreme southern zones late in the day. OUTLOOK (SATURDAY-MONDAY) The upper-level ridge now appears as if it will remain strong enough to bring another generally dry day on Saturday. However, a weak weather system will move across northern California and bring a slight chance of showers to the southern-most zones. Mostly sunny skies will help temperatures climb to above normal across the northern zones, but more cloudiness will hold temperatures to near normal across the southern zones. Daytime mixing will be good. Look for transport winds to turn back onshore in the afternoon, as the upper-level ridge axis slides east of the region. As the upper-level ridge continues to weaken and shift eastward, a strengthening westerly jet stream will drive a weak cold front across western Oregon Easter Sunday morning. Precipitation from this system could locally exceed .25 inches, especially over higher terrain. The snow level will drop to 4000 feet north and 5000 feet south. Mixing should be good with increasing southwesterly transport winds. A stronger cold front is forecast to come onshore Sunday night and early Monday. This system will bring more significant precipitation to all of western Oregon, with the snow level dropping to 3000 feet north and 4000 feet south. Mixing should be good with brisk southwesterly surface and transport winds. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height below 1500 ft early rising to 3000 - 4000 ft by late morning. Transport wind NNE to ENE at 9 - 15 mph. Surface wind NNE to ENE at 5 - 9 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind similar to morning. Surface wind NNE to NE at 8 - 12 mph. EVENING Mixing height lowers below 2000 ft after sunset. Transport wind similar to afternoon. Surface wind similar to afternoon. Zone 605-611 (North Cascades): MORNING Mixing height below 1500 ft early rising to 3000 - 4000 ft by late morning. Transport wind NNE to ENE at 5 - 9 mph. Surface wind light and variable but favors NE and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind N to NE at 6 - 12 mph. Surface wind similar to morning. EVENING Mixing height lowers below 2000 ft after sunset. Transport wind NE to E at 8 - 12 mph. Surface wind increases to NE to E at 4 - 8 mph. Zone 615-620 (South Coast Range): MORNING Mixing height below 1500 ft early rising to 3000 - 4000 ft by late morning. Transport wind ENE to E at 8 - 12 mph. Surface wind NE to E at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind shifts to N to NE at 4 - 8 mph. Surface wind becomes light and variable but favors N to NE and controlled by local terrain. EVENING Mixing height lowers below 1500 ft after sunset. Transport wind NNW to NE at 4 - 8 mph. Surface wind similar to afternoon. Zone 616-623 (South Cascades): MORNING Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning. Transport wind E to SE at 4 - 8 mph. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind becomes light and variable and controlled by local terrain. Surface wind similar to morning. EVENING Mixing height lowers below 1500 ft after sunset. Transport wind similar to afternoon. Surface wind similar to afternoon. OUTLOOK: SATURDAY In the north mixing height below 1000 ft early rising to 1700 to 2700 ft by late morning rising above 5000 ft during the afternoon. In the south mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising above 5000 ft during the afternoon. Transport wind ESE to SSE at 4 - 8 mph during the morning becoming WSW to NW at 4 - 8 mph during the afternoon. Surface wind light and variable. SUNDAY Mixing height 2100 to 3100 ft during the morning rising above 5000 ft during the afternoon. Transport wind SSW to SW at 9 - 15 mph. Surface wind S to SW at 4 - 8 mph during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon. MONDAY Mixing height 3800 to 4800 ft during the morning rising above 5000 ft during the afternoon. Transport wind SSW to SW at 20 - 34 mph. Surface wind SSW to SW at 12 - 22 mph. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Friday, April 22, 2011. ================================================================= Coast Range All Zones Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Cascades Zone 605, 606, 620, and 622 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T20S in Zone 606. Call the forecaster. Zone 607, 608, and 616 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. South of T30S in Zone 616 units should be 500 tons or less, spaced 5 miles apart. Zone 609, 610, 611, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. South of T30S in Zone 617 units should be 750 tons or less, spaced 5 miles apart. Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Fri Apr 22 15:12:16 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Fri, 22 Apr 2011 15:12:16 -0700 Subject: SMI West (Smoke Management Instructions) Corrected Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY Correction to winds forecast for Monday and Tuesday: ISSUED: Friday, April 22, 2011 3:10 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 SCHEDULING NOTE: No forecaster will be available on Saturday, April 23rd. Beginning Sunday, April 24th, we will transition to 7-days-a-week forecasting for the duration of the spring burning season. SATURDAY A weak upper-level ridge will bring one more generally dry day, but the ridge axis will shift east of the region. Skies will start out mostly sunny, but a weather system, in a westerly jet stream aimed at California, will spread clouds northeastward across most of western Oregon during the day. The chance of showers will be limited to the south zones, mainly over higher terrain in the afternoon and evening. The surface thermal trough is forecast to shift over the Cascades by late-morning and into Central Oregon in the afternoon. Afternoon temperatures should climb to above normal, for a change, across the northern zones, but more cloudiness, and a quicker switch to onshore flow, will hold temperatures near normal central and south. Daytime mixing will be good, but an early-day transition back to onshore flow will limit burning opportunities in the coast range. OUTLOOK (SUNDAY-TUESDAY) As the upper-level ridge continues to weaken and shift eastward, a strengthening westerly jet stream will drive a weak cold front across western Oregon Easter Sunday morning. Precipitation from this system will be light but could locally exceed .25 inches, especially over higher terrain. The snow level will drop to 4000 feet north and 5000 feet south. Mixing should be good with increasing southwesterly transport winds. A stronger cold front is forecast to come onshore Sunday night and early Monday. This system will bring more significant precipitation to all of western Oregon, with locally over .50 inches expected. The snow level will drop to 3000 feet north and 4000 feet south. Mixing should be good with brisk west to southwest winds. A flat upper-level ridge is forecast to bring a drier and more stable northwesterly flow aloft on Tuesday. Showers will taper off with temperatures remaining well below normal. The snow level will only rise to 3500 feet north and 4500 feet south. Mixing will be good with decreasing onshore transport winds. 2. DISPERSION Zone 601-612 (North Coast Range and Cascades): MORNING Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning. Transport wind ESE to S at 4 - 8 mph. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind becomes light and variable but favors SW to W and controlled by local terrain. Surface wind similar to morning. EVENING Mixing height 1700 - 2700 ft. Transport wind increases to WSW to WNW at 6 - 12 mph. Surface wind increases to WSW to WNW at 6 - 12 mph. Zone 615-623 (South Coast Range and Cascades): MORNING Mixing height below 1000 ft early rising to 3000 - 4000 ft by late morning. Transport wind light and variable and controlled by local terrain. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind shifts to WSW to NW at 6 - 12 mph. Surface wind increases to WSW to NW at 4 - 8 mph. EVENING Mixing height 1500 - 2500 ft. Transport wind W to NW at 5 - 9 mph. Surface wind W to NW at 5 - 9 mph. OUTLOOK: SUNDAY Mixing height 1900 to 2900 ft during the morning rising above 5000 ft during the afternoon. Transport wind S to SW at 10 - 18 mph during the morning becoming SSW to WSW at 14 - 28 mph during the afternoon. Surface wind S to SW at 4 - 8 mph during the morning becoming SW to WSW at 8 - 12 mph during the afternoon. MONDAY Mixing height 2600 to 3600 ft during the morning rising above 5000 ft during the afternoon. Transport wind WSW to W at 20 - 34 mph. Surface wind WSW to WNW at 10 - 20 mph. TUESDAY Mixing height 1900 to 2900 ft during the morning rising above 5000 ft during the afternoon. Transport wind S to SW at 4 - 8 mph during the morning becoming SW to WNW at 4 - 8 mph during the afternoon. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Saturday and Sunday, April 23 and 24, 2011. ================================================================= For Saturday: Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Zone 602 and 603 Units should be 300 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 615 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades Zone 605 and 606 Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 607, 608, 609, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T12S through T17S in Zone 608 units should be 1000 tons or less, spaced 5 miles apart. Zone 610 and 611 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 622 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. East of R2W, use standard guidance matrix. (See section 5 below.) Siskiyous Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. For Sunday: Coast Range Zone 601, 612, 615, 616 west of R8W, and 620 Units should be 1000 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.) Higher tonnage is possible south of T29S in Zone 616. Call the forecaster. No burning allowed south of T35S in Zone 620. Zone 602 and 603 Units should be 300 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.) Units may be 500 tons or less, spaced 10 miles apart, south of the Siuslaw River in Zone 603. Zone 616 east of R9W Units should be 500 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 1500 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Cascades All zones except zone 611 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T18S through T22S in Zone 608 units should be 750 tons or less, spaced 10 miles apart. Zone 611 Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Siskiyous Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Sun Apr 24 14:03:44 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Sun, 24 Apr 2011 14:03:44 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Sunday, April 24, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 MONDAY A fairly deep and compact upper level low moves west across the Pacific Ocean toward Vancouver Island on Monday. The upper trough with this supports an active Pacific cold front. The polar jet is estimated to exceed 175mph at the 30,000 foot level and cuts into North America over extreme southwest Oregon. Oregon will be under the left front quadrant of the jet and thus prone to rainy weather. Models indicate over one half inch in the north coast range during the day with lesser amounts elsewhere. Transport winds should be brisk, from the west southwest most areas, and mixing heights will be quite high for good smoke dispersal conditions. EXTENDED OUTLOOK (TUESDAY - THURSDAY) Minor ridging develops on Tuesday but the jet stream, while weaker, remains over the state. Areas of light rain will continue through the day. As the ridge builds some warming aloft will suppress mixing heights slightly but smoke dispersal conditions will remain fair to good. Transport winds will be mostly southwesterly except becoming light northwesterly over the southern Cascades. Whatever minor ridging develops Tuesday and Tuesday night flattens Wednesday as another upper low and trough move toward the coastline. There will be limited moisture but areas of light rain will continue. High maximum mixing heights will give good smoke dispersal conditions most areas. The upper trough moves in on Thursday supporting a cold front that reaches northwest Oregon early then spreads rain, or snow at higher elevations, south and east during the day. The snow level will drop to around 2000 feet in the north and 3000 feet in the south. Mixing will remain good for good smoke dispersal conditions. Transport winds will be northwesterly to west in the north, southwesterly in the south. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 2500 - 3500 ft. Transport wind ESE to S at 4 - 8 mph. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising above 5000 ft. Transport wind WSW at 20 - 36 mph. Surface wind increases to SW to W at 13 - 25 mph. EVENING Mixing height 2700 - 3700 ft. Transport wind WSW to W at 18 - 30 mph. Surface wind SW to W at 10 - 18 mph. Zone 605-611 (North Cascades): MORNING Mixing height above 5000 ft. Transport wind SSE to SSW at 9 - 15 mph. Surface wind SSE to SSW at 8 - 12 mph. AFTERNOON Mixing height lowers to 4000 - 5000 ft. Transport wind shifts to SW to W and increases to 13 - 25 mph. Surface wind shifts to SW to W and increases to 12 - 24 mph. EVENING Mixing height 3300 - 4300 ft. Transport wind similar to afternoon. Surface wind SW to WSW at 10 - 22 mph. Zone 615-620 (South Coast Range): MORNING Mixing height 3300 - 4300 ft. Transport wind SW to W at 15 - 25 mph. Surface wind SW to W at 12 - 22 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind similar to morning. Surface wind similar to morning. EVENING Mixing height 3400 - 4400 ft. Transport wind SW to W at 10 - 20 mph. Surface wind SW to W at 9 - 15 mph. Zone 616-623 (South Cascades): MORNING Mixing height 3500 - 4500 ft. Transport wind SW to WSW at 14 - 28 mph. Surface wind SW to WSW at 12 - 24 mph. AFTERNOON Mixing height 3500 - 4500 ft. Transport wind WSW to WNW at 12 - 22 mph. Surface wind WSW to WNW at 10 - 22 mph. EVENING Mixing height 2100 - 3100 ft. Transport wind WSW to WNW at 10 - 18 mph. Surface wind WSW to WNW at 9 - 15 mph. OUTLOOK: TUESDAY Mixing height 2200 to 3200 ft during the morning rising to 3400 to 4400 ft during the afternoon. Transport wind SSW to WSW at 10 - 16 mph. Surface wind SSW to WSW at 8 - 12 mph. WEDNESDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 4 - 8 mph. Surface wind SSW to WSW at 4 - 8 mph. THURSDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to WSW at 8 - 12 mph during the morning becoming WSW to NW at 6 - 12 mph during the afternoon. Surface wind SW to W at 4 - 8 mph. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Monday, April 25, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.) Zone 602 and 603 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.) Avoid burning in or near corridors. Units may be 750 tons or less, spaced 5 miles apart, south of the Siuslaw River in Zone 603. Zone 615 and 620 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. South of T35S in Zone 620 units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades All zones except zone 611 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T18S through T22S in Zone 608 units should be 1000 tons or less, spaced 8 miles apart. Zone 611 Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Siskiyous Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Mon Apr 25 13:35:22 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Mon, 25 Apr 2011 13:35:22 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Monday, April 25, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 TUESDAY Upper troughiness slowly gives way to weak ridging aloft during the day on Tuesday. Only limited moisture is available but I can't rule out the possibility of some light rain during the day. Transport winds will be mostly southwesterly but not as brisk as on Monday. Smoke dispersal conditions will be generally fair except good for the South Coast Range. OUTLOOK (WEDNESDAY - FRIDAY) The weak ridging moves east during the day on Wednesday as an upper low moves across the southern Gulf of Alaska toward Vancouver Island. An associated cold front moves into northwest Oregon late in the day. Mixing heights will be up from Tuesday but transport winds will be fairly light and generally from the south southwest. The upper low drifts across southern British Columbia on Thursday and another surge of moisture moves in for renewed precipitation. Much cooler aloft will push mixing heights to above 5000 feet and brisk southwesterly transport winds will be the rule. This should give good smoke dispersal conditions. On Friday post frontal showers continue with transport winds becoming westerly and diminishing. Upper level ridging is beginning to build and shift over the area from the west and should lead to dry weather for the weekend. Mixing heights max out at 5000 feet or above and westerly transport winds indicate good smoke dispersal conditions for Friday. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 1800 - 2800 ft. Transport wind SW to WSW at 10 - 22 mph. Surface wind SSW to WSW at 8 - 14 mph. AFTERNOON Mixing height rising to 3300 - 4300 ft. Transport wind decreases to SW to W at 8 - 12 mph. Surface wind SW to W at 6 - 10 mph. EVENING Mixing height lowers below 1000 ft. Transport wind similar to afternoon. Surface wind becomes light and variable and controlled by local terrain. Zone 605-611 (North Cascades): MORNING Mixing height 2500 - 3500 ft. Transport wind SSW to SW at 9 - 15 mph. Surface wind SSW to SW at 9 - 15 mph. AFTERNOON Mixing height 2500 - 3500 ft. Transport wind S to SW at 6 - 12 mph. Surface wind S to SW at 6 - 12 mph. EVENING Mixing height lowers below 1000 ft. Transport wind SSW to WSW at 4 - 8 mph. Surface wind becomes light and variable and controlled by local terrain. Zone 615-620 (South Coast Range): MORNING Mixing height 2900 - 3900 ft. Transport wind SW to WNW at 4 - 8 mph. Surface wind SW to WNW at 4 - 8 mph. AFTERNOON Mixing height rising to 4300 - 5000 ft. Transport wind shifts to WNW to NNW at 8 - 12 mph. Surface wind shifts to WNW to NNW at 8 - 12 mph. EVENING Mixing height 1000 - 2000 ft. Transport wind WNW to NNW at 5 - 9 mph. Surface wind WNW to NNW at 4 - 8 mph. Zone 616-623 (South Cascades): MORNING Mixing height 2300 - 3300 ft. Transport wind light and variable. Surface wind light and variable and controlled by local terrain. AFTERNOON Mixing height rising to 3500 - 4500 ft. Transport wind increases to WNW to NNW at 4 - 8 mph. Surface wind increases to WNW to NNW at 5 - 9 mph. EVENING Mixing height lowers below 1000 ft. Transport wind becomes light and variable. Surface wind becomes light and variable and controlled by local terrain. OUTLOOK: WEDNESDAY Mixing height 2200 to 3200 ft during the morning rising to 3400 to 4400 ft during the afternoon. Transport wind SSW to WSW at 10 - 16 mph. Surface wind SSW to WSW at 8 - 12 mph. THURSDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 4 - 8 mph. Surface wind SSW to WSW at 4 - 8 mph. FRIDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising above 5000 ft during the afternoon. Transport wind SW to WSW at 8 - 12 mph during the morning becoming WSW to NW at 6 - 12 mph during the afternoon. Surface wind SW to W at 4 - 8 mph. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Tuesday, April 26, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.) Zone 602 and 603 Units should be 300 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.) Avoid burning in or near corridors. Units may be 500 tons or less, spaced 10 miles apart, south of the Siuslaw River in Zone 603. Zone 615 Units should be 1200 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W and 620 Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T35S in Zone 620. Call the forecaster. Zone 618 Units should be 2000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 619 Units should be 1500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Cascades Zone 605, 606, 607, 608, 609, 610, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. South of T30S in Zone 616 units should be 500 tons or less, spaced 8 miles apart. Zone 611 Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Zone 620 and 622 Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. East of R2W in Zone 622, use standard guidance matrix. (See section 5 below.) Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Tue Apr 26 14:02:49 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Tue, 26 Apr 2011 14:02:49 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Tuesday, April 26, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 WEDNESDAY A weak upper level ridge drifts east out of the state during the day as an upper level low moves toward Vancouver Island. Low level flow will be onshore to keep skies cloudy, but rain will hold off until late in the day when a weak cold front brings rain to northwest Oregon. Mixing heights will be high for good smoke dispersal conditions. Transport winds will be southwesterly except becoming westerly in the afternoon in the southern Cascades. OUTLOOK (THURSDAY - SATURDAY) The upper level low moves eastward across southern British Columbia with a trailing trough moving across Oregon on Thursday. It will be a wet day. Rainfall amounts of one-half inch are likely. Transport winds shift to northwesterly and cool air aloft with the trough will keep mixing heights high for good smoke dispersal conditions. The upper trough slips east and a ridge of high pressure develops in the eastern Pacific and the Gulf of Alaska on Friday. This will shift winds aloft to north northwesterly over the region. In the transport region winds will be mostly northwesterly except northerly in the south. Minor impulses in the upper flow will keep showers going. Mixing heights will be high enough to provide fair to good smoke dispersal conditions. By Saturday a surface high noses into western Oregon and a surface thermal trough builds in northern California. Expect cloudy skies with a chance of drizzle in the north in the morning but otherwise dry weather. Burn locations that benefit from northerly components to transport winds should be considered for Saturday. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 4000 - 5000 ft. Transport wind SSW to WSW at 10 - 16 mph. Surface wind SSW to SW at 8 - 14 mph. AFTERNOON Mixing height above 5000 ft. Transport wind increases to SW to W at 14 - 28 mph. Surface wind SW to W at 10 - 20 mph. EVENING Mixing height 2000 - 3000 ft. Transport wind WSW to W at 13 - 25 mph. Surface wind WSW to WNW at 9 - 15 mph. Zone 605-611 (North Cascades): MORNING Mixing height 2600 - 3600 ft. Transport wind SSW to WSW at 8 - 14 mph. Surface wind SSW to WSW at 8 - 14 mph. AFTERNOON Mixing height rising to 3800 - 4800 ft. Transport wind WSW to WNW at 10 - 16 mph. Surface wind WSW to WNW at 9 - 15 mph. EVENING Mixing height 2800 - 3800 ft. Transport wind similar to afternoon. Surface wind similar to afternoon. Zone 615-620 (South Coast Range): MORNING Mixing height 4400 - 5000 ft. Transport wind SW to WNW at 5 - 9 mph. Surface wind SW to WNW at 5 - 9 mph. AFTERNOON Mixing height above 5000 ft. Transport wind increases to WSW to WNW at 10 - 20 mph. Surface wind increases to WSW to WNW at 10 - 18 mph. EVENING Mixing height 2500 - 3500 ft. Transport wind SW to W at 9 - 15 mph. Surface wind SW to WNW at 6 - 12 mph. Zone 616-623 (South Cascades): MORNING Mixing height 1800 - 2800 ft. Transport wind SSW to WSW at 4 - 8 mph. Surface wind SSW to WSW at 5 - 9 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind WSW to WNW at 8 - 12 mph. Surface wind WSW to WNW at 8 - 12 mph. EVENING Mixing height 1100 - 2100 ft. Transport wind W to NW at 6 - 12 mph. Surface wind W to NW at 6 - 10 mph. OUTLOOK: THURSDAY In the north mixing height 2300 to 3300 ft during the morning rising above 5000 ft during the afternoon. In the south mixing height 1700 to 2700 ft during the morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 6 - 10 mph during the morning becoming WSW to WNW at 8 - 12 mph during the afternoon. Surface wind SSW to WSW at 5 - 9 mph during the morning becoming WSW to WNW at 6 - 12 mph during the afternoon. FRIDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising to 3800 to 4800 ft during the afternoon. Transport wind WNW to NNW at 5 - 9 mph. Surface wind light and variable. SATURDAY Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3500 to 4500 ft during the afternoon. Transport wind NNW to NNE at 4 - 8 mph. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Wednesday, April 27, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.) Zone 602, 603, and 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.) Avoid burning in or near corridors. Units may be 750 tons or less, spaced 5 miles apart, south of the Siuslaw River in Zone 603. Zone 615 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades All zones except Zone 610 and 611 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T15S through T20S in Zone 608 units should be 1000 tons or less, spaced 8 miles apart. Zone 610 and 611 Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Siskiyous Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Wed Apr 27 14:08:23 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Wed, 27 Apr 2011 14:08:23 -0700 Subject: SMI West (Smoke Management Instructions) (no subject) Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Wednesday, April 27, 2011 2:30 PM Jim Little 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 THURSDAY An upper level trough on a northeast to southwest axis moves across the region on Thursday. Models show another band of moisture extending north-northeast to south-southwest moving across the region. It will bring rain (or snow to higher elevations) by late morning to northern sections and the precipitation will spread southward into southern zones by afternoon. Snow levels will be around 2000 feet in the north and 3000 feet in the south. Smoke dispersal conditions will be fair or fair to good most areas and transport winds will be generally southwest. EXTENDED OUTLOOK (FRIDAY - SUNDAY) The upper trough moves east early and a ridge of high pressure is building to the west of Oregon on Friday, although the axis of that ridge will be several hundred miles to the west of the coastline. Western Oregon can expect drying but showers are still possible during the day. The freezing level will begin to rise in the north. Mixing heights should allow for fair to good smoke dispersal conditions most areas and transport winds will vary from northwest to southwest. Saturday the ridge builds and its axis moves to about 300 miles west of the coast. Weather turns dry but transport winds go light, generally northwest in the north with northerly transports in the south. Look for fair to good smoke dispersal conditions except just marginal conditions over the southern Cascades. A broad ridge in the upper atmosphere moves over the region on Sunday for fair weather. A thermal trough builds over California and low level flow goes light offshore. Smoke dispersal conditions should generally be fair. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height 1100 - 2100 ft. Transport wind SW to W at 8 - 12 mph. Surface wind SW to W at 5 - 9 mph. AFTERNOON Mixing height rising to 4000 - 5000 ft. Transport wind WSW to NW at 6 - 10 mph. Surface wind W to NW at 8 - 14 mph. EVENING Mixing height 2100 - 3100 ft. Transport wind similar to afternoon. Surface wind WSW to WNW at 6 - 12 mph. Zone 605-611 (North Cascades): MORNING Mixing height 1100 - 2100 ft. Transport wind SSW to SW at 8 - 12 mph. Surface wind SSW to WSW at 6 - 12 mph. AFTERNOON Mixing height rising to 3000 - 4000 ft. Transport wind SW to W at 5 - 9 mph. Surface wind SW to W at 6 - 10 mph. EVENING Mixing height 2500 - 3500 ft. Transport wind SSW to WSW at 6 - 12 mph. Surface wind SSW to WSW at 6 - 10 mph. Zone 615-620 (South Coast Range): MORNING Mixing height 3100 - 4100 ft. Transport wind WSW to WNW at 10 - 18 mph. Surface wind WSW to WNW at 10 - 16 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind decreases to WSW to NW at 6 - 10 mph. Surface wind WSW to NW at 6 - 10 mph. EVENING Mixing height 2800 - 3800 ft. Transport wind W to NW at 6 - 10 mph. Surface wind similar to afternoon. Zone 616-623 (South Cascades): MORNING Mixing height 1900 - 2900 ft. Transport wind SSW to W at 6 - 12 mph. Surface wind SSW to W at 6 - 12 mph. AFTERNOON Mixing height rising to 3500 - 4500 ft. Transport wind shifts to W to NW at 8 - 12 mph. Surface wind shifts to W to NW at 8 - 12 mph. EVENING Mixing height 2100 - 3100 ft. Transport wind WNW to NNW at 6 - 10 mph. Surface wind WNW to NNW at 5 - 9 mph. OUTLOOK: FRIDAY Mixing height 1900 to 2900 ft during the morning rising to 3200 to 4200 ft during the afternoon. Transport wind WSW to WNW at 8 - 14 mph during the morning becoming WNW to NNW at 10 - 16 mph during the afternoon. Surface wind SW to WNW at 6 - 12 mph during the morning becoming WNW to NNW at 8 - 14 mph during the afternoon. SATURDAY Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3300 to 4300 ft during the afternoon. Transport wind NNW to NNE at 4 - 8 mph. Surface wind light and variable. SUNDAY Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning and through the afternoon. Transport wind E to SSE at 4 - 8 mph. Surface wind light and variable. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Thursday, April 28, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 750 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Zone 602 and 603 Units should be 300 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of the Siuslaw River in Zone 603. Call the forecaster. Zone 615 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 west of R8W Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S. Zone 618 Use standard guidance matrix. (See section 5 below.) Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades Zone 605, 606, 607, 608, 609, 610, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T18S through T22S in Zone 608 units should be 750 tons or less, spaced 10 miles apart. Zone 611 Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs. Zone 620 Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 622 Units should be 1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. East of R2W, use standard guidance matrix. (See section 5 below.) Siskiyous Units should be 1500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Thu Apr 28 14:34:43 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Thu, 28 Apr 2011 14:34:43 -0700 Subject: SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Thursday, April 28, 2011 2:30 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 FRIDAY The axis of an unseasonably cold upper-level trough is forecast to slowly push east of the state with a continued cool and somewhat unstable northwesterly flow aloft. Scattered showers are likely, mainly north and over higher terrain south, with a slight chance of afternoon thunderstorms and small hail. The snow level will start out near 1500 feet north and 2500 feet south, before rising to 3000 feet north and 4000 feet south in the afternoon. Afternoon temperatures will be well below normal, with good mixing and northwesterly transport winds. OUTLOOK (SATURDAY-MONDAY) An upper-level ridge is forecast to build offshore Saturday with a drier and more stable northwesterly flow aloft over Oregon. Look for partly cloudy skies. The snow level will only rise to 3500 feet north and 4500 feet south. The air aloft will remain cold enough for daytime heating to possibly trigger a few showers, mainly north and over higher terrain. After a chilly morning, afternoon temperatures will moderate slightly but remain below normal. Mixing should be good with transport winds veering from northwesterly to northerly. A weak upper-level ridge axis is forecast to move onshore Sunday, with generally sunny skies expected. Temperatures should rebound to above normal with a surface thermal trough building northward, into southwestern Oregon, and turning transport winds offshore. The freezing level will jump to 9000 feet north and 10,000 feet south. Warming aloft will stabilize the air mass, with fair to good afternoon mixing. The transitory upper-level ridge will push east of the state Monday with an increasing westerly flow aloft bringing a weak cold front onshore by the afternoon. Transport winds will likely turn onshore in the early morning, which would limit burning opportunities in the coast range. The cold front is forecast to only bring light rain to the northern zones, with the southern zones likely staying dry, for a change. A lack of cold air aloft with this system will only drop snow levels to around 4000 feet north and 6000 feet south. Surface temperatures will drop back below normal with good mixing and increasing onshore transport winds. 2. DISPERSION Zone 601, 602, 603 and 612 (North Coast Range): MORNING Mixing height below 2500 ft early rising to 3000 - 4000 ft by late morning. Transport wind WNW to NNW at 9 - 15 mph. Surface wind W to NW at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind NW to NNW at 10 - 22 mph. Surface wind WNW to NW at 8 - 12 mph. EVENING Mixing height 2500 - 3500 ft. Transport wind WNW to NNW at 9 - 15 mph. Surface wind similar to afternoon. Zone 605-611 (North Cascades): MORNING Mixing height below 2500 ft early rising to 3000 - 4000 ft by late morning. Transport wind WNW to NW at 9 - 15 mph. Surface wind WSW to WNW at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind WNW to NW at 10 - 22 mph. Surface wind similar to morning. EVENING Mixing height 2500 - 3500 ft. Transport wind WNW to NW at 9 - 15 mph. Surface wind similar to afternoon. Zone 615-623 (South Coast Range and Cascades): MORNING Mixing height below 2500 ft early rising to 3000 - 4000 ft by late morning. Transport wind WNW to NNW at 10 - 18 mph. Surface wind W to NW at 6 - 10 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind NW to NNW at 12 - 22 mph. Surface wind NW to N at 8 - 12 mph. EVENING Mixing height 2000 - 3000 ft. Transport wind decreases to NNW to NNE at 8 - 12 mph. Surface wind NW to NNE at 5 - 9 mph. OUTLOOK: SATURDAY Mixing height 2200 to 3200 ft during the morning rising above 5000 ft during the afternoon. Transport wind NW to N at 6 - 10 mph during the morning becoming NNW to NNE at 10 - 16 mph during the afternoon. Surface wind NW to N at 4 - 8 mph. SUNDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising to 3800 to 4800 ft during the afternoon. Transport wind E to SE at 6 - 10 mph during the morning becoming ESE to SSE at 4 - 8 mph during the afternoon. Surface wind light and variable. MONDAY Mixing height below 1000 ft early rising to 2800 to 3800 ft by late morning rising above 5000 ft during the afternoon. Transport wind SSW to WSW at 10 - 18 mph during the morning becoming WSW to WNW at 10 - 18 mph during the afternoon. Surface wind light and variable during the morning becoming W to NW at 6 - 10 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Friday, April 29, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500 tons or less. Higher tonnage is possible south of Waldport in Zone 612. Call the forecaster. Zone 602, 603, and 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Avoid burning in or near corridors. Higher tonnage is possible south of the Siuslaw River in Zone 603. Call the forecaster. Higher tonnage is possible south of the Rogue River in Zone 620. Call the forecaster. Zone 615, 618, and 619 Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of the North Bend/Coos Bay SSRA. Zone 616 west of R8W Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 east of R9W Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Restrict units to 500 tons or less south of T30S. Cascades Zone 605, 606, 607, 608, 609, 611, 616, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. From T12S through T17S in Zone 608 units should be 1000 tons or less, spaced 5 miles apart. South of T30S in Zone 616 units should be 500 tons or less, spaced 5 miles apart. Zone 610 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 and 622 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. East of R2W in Zone 622, use standard guidance matrix. (See section 5 below.) Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Fri Apr 29 14:33:11 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Fri, 29 Apr 2011 14:33:11 -0700 Subject: SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Friday, April 29, 2011 2:30 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 SATURDAY An upper-level ridge is forecast to build about 500 miles offshore with a drier and more stable northwesterly flow aloft over Oregon. Slow warming aloft should stabilize the atmosphere, but the snow level will only rise to 3500 feet north and 4500 feet south. After a chilly morning, afternoon temperatures will moderate slightly but remain below normal. Daytime heating could still trigger an isolated light shower or two, mainly north and over higher terrain. Mixing should be good with mostly northerly transport winds. OUTLOOK (SUNDAY-TUESDAY) A progressive upper-level ridge is forecast to move onshore Sunday, with continued warming and drying of the air mass over Oregon. Warming aloft will stabilize the air mass, with the freezing level jumping to 9000 feet north and 10,000 feet south. That will help afternoon temperatures recover to above normal, after a locally frosty early morning. A surface thermal trough is forecast to build northward, into southwestern Oregon, and turn transport winds offshore with fair to good afternoon mixing. The upper-level ridge will push east of the state Monday with an increasing westerly flow aloft bringing a weak cold front onshore by the afternoon. Transport winds will likely turn onshore in the early morning, which would limit burning opportunities in the coast range. The cold front is forecast to bring light rain to the northern zones, with the southern zones likely staying dry, for a change. Cold air aloft will not penetrate as far south, with this system, so snow levels will only drop to around 4000 feet north and 6500 feet south late. Cooling aloft should maintain fair to good mixing with increasing onshore transport winds. Surface temperatures will drop back to slightly below normal north but likely remain just above normal south. A weak upper-level trough will push east of the state Tuesday, with a return to a dry northwesterly flow aloft. Skies should be partly cloudy. The freezing level will rise above 7000 feet north and 10,000 feet south, which may suppress afternoon mixing heights slightly. Mixing should still be fair to good, with locally brisk northerly winds keeping temperatures near normal. 2. DISPERSION Zone 601-612 (North Coast Range and Cascades): MORNING Mixing height below 2000 ft early rising to 3500 - 4500 ft by late morning. Transport wind NW to NNE at 6 - 10 mph. Surface wind NW to N at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind NNW to NNE at 9 - 15 mph. Surface wind NW to NNE at 6 - 12 mph. EVENING Mixing height 1500 - 2500 ft. Transport wind similar to afternoon. Surface wind NW to NNE at 4 - 8 mph. Zone 615-623 (South Coast Range and Cascades): MORNING Mixing height below 1500 ft early rising to 3500 - 4500 ft by late morning. Transport wind NNE to NE at 9 - 15 mph. Surface wind N to NE at 8 - 12 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind increases to NNE to NE at 12 - 24 mph. Surface wind NNW to NNE at 9 - 15 mph. EVENING Mixing height 1500 - 2500 ft. Transport wind N to NE at 10 - 20 mph. Surface wind similar to afternoon. OUTLOOK: SUNDAY In the north mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 4000 to 5000 ft during the afternoon. In the south mixing height below 1000 ft early rising to 1700 to 2700 ft by late morning rising above 5000 ft during the afternoon. Transport wind ENE to ESE at 6 - 10 mph during the morning becoming ESE to SSE at 6 - 10 mph during the afternoon. Surface wind light and variable. MONDAY Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising to 4100 to 5000 ft during the afternoon. Transport wind SSW to WSW at 10 - 18 mph during the morning becoming W to NW at 10 - 18 mph during the afternoon. Surface wind light and variable during the morning becoming W to NW at 6 - 12 mph during the afternoon. TUESDAY Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 4000 to 5000 ft during the afternoon. Transport wind NNW to NNE at 6 - 12 mph. Surface wind NNW to NNE at 4 - 8 mph. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Saturday, April 30, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of Waldport in Zone 612. Call the forecaster. Zone 602 and 603 Units should be 750 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Avoid ignitions north of Forest Grove/Hillsboro or Sheridan/Willamina in Zone 602. Higher tonnage is possible south of T17S in Zone 603. Call the forecaster. Zone 615, 616, 618, 619, and 620 Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of the North Bend/Coos Bay SSRA. Cascades Zone 605 and 606 Units should be 1200 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Verify transport winds away from SSRA if burning within 10 miles of the SSRA. Higher tonnage is possible south of T20S in Zone 606. Call the forecaster. Zone 607, 608, 609, and 611 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Zone 610 and 616 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. South of T30S in Zone 616 units should be 500 tons or less, spaced 5 miles apart. Zone 617 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. South of T30S units should be 750 tons or less, spaced 5 miles apart. Zone 620 and 622 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 623 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. South of T36S, use standard guidance matrix. (See section 5 below.) Siskiyous Use standard guidance matrix. (See section 5 below.) ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: From smi_west at listsmart.osl.state.or.us Sat Apr 30 14:30:49 2011 From: smi_west at listsmart.osl.state.or.us (ODF Smoke Management Instructions) Date: Sat, 30 Apr 2011 14:30:49 -0700 Subject: SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions Message-ID: SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS SALEM FORESTRY WEATHER CENTER OREGON DEPARTMENT OF FORESTRY ISSUED: Saturday, April 30, 2011 2:30 PM Pete Parsons 1. DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 SUNDAY A drying northwesterly flow aloft will help to clear skies, in the wake of an unseasonably cold upper-level trough. That will make for a very cold morning, with areas of valley frost. A transitory upper-level ridge is forecast to move onshore, during the day, with continued warming and drying of the air mass. The freezing level will jump to 9000 feet north and 10,000 feet south. A surface thermal trough is forecast to build northward, into southwestern Oregon, and help high temperatures recover to above normal. Offshore flow, especially early in the day, will combine with ample sunshine to aid in the drying of fuels, with fair to good afternoon mixing. The surface thermal trough is forecast to shift eastward enough for a return to onshore flow, across the southern-most zones, late in the afternoon. Winds will likely go light and variable across the northern zones in the afternoon. The burning instructions reflect transport winds turning light and variable across most zones by early afternoon. OUTLOOK (MONDAY-WEDNESDAY) The upper-level ridge is forecast to progress east of the state by Monday with an increasing westerly flow aloft directing a cold front onshore in the morning. Transport winds will likely turn onshore across the northern zones early in the morning, which will limit burning opportunities in the coast range. The latest guidance is more impressive with rainfall amounts and coverage from this system. Some northern areas will likely see more than .10 inches, with light rain or a few showers possibly reaching the southern zones. Cooling aloft should maintain fair to good mixing Monday. Southwesterly transport winds will become more west to northwesterly, in the wake of the cold front, during the afternoon. High temperatures will be slightly below normal north and near normal south. Snow levels will drop to around 3500 feet north and 5500 feet south late. An upper-level trough will push east of the state Tuesday. A drying northwesterly flow aloft will begin to clear skies, with a few lingering showers possible north. The freezing level will rise to near 7000 feet north and 10,000 feet south by evening. Even with increasing sunshine, locally brisk north to northwesterly winds will hold temperatures near to slightly below normal. Warming aloft and cool surface temperatures will likely suppress mixing slightly, especially south, with fair to good afternoon mixing. Another weak and transitory upper-level ridge is forecast to move onshore by Wednesday afternoon, bringing mostly sunny and warmer conditions. Temperatures will recover to near normal north and to above normal south. Northerly transport winds may turn slightly offshore, as a surface thermal trough attempts to build northward into southwestern Oregon. The freezing level will lift to about 9000 feet north and to over 10,000 feet south. Warming aloft may suppress mixing heights slightly, but warmer surface temperatures should make for fair to good afternoon mixing. The upper-air pattern is forecast to remain progressive, with long-range computer models differing on the strength of a weaker weather system forecast to come onshore late Thursday and Friday. That system may bring light rain or showers to the northern zones. A stronger weather system is forecast to bring back cool and damp conditions next weekend. 2. DISPERSION Zone 601-612 (North Coast Range and Cascades): MORNING Mixing height below 500 ft early rising to 2500 - 3500 ft by late morning. Transport wind NE to E at 4 - 8 mph. Surface wind NNE to ENE at 4 - 8 mph. AFTERNOON Mixing height rising to 4000 - 5000 ft. Transport wind becomes light and variable and controlled by local terrain. Surface wind becomes light and variable and controlled by local terrain. EVENING Mixing height 1000 - 2000 ft. Transport wind similar to afternoon. Surface wind similar to afternoon. Zone 615-623 (South Coast Range and Cascades): MORNING Mixing height below 1200 ft early rising to 3000 - 4000 ft by late morning. Transport wind E to SE at 6 - 10 mph. Surface wind ENE to ESE at 4 - 8 mph. AFTERNOON Mixing height rising above 5000 ft. Transport wind becomes light and variable and controlled by local terrain. Surface wind becomes light and variable and controlled by local terrain. EVENING Mixing height 1000 - 2000 ft. Transport wind similar to afternoon. Surface wind similar to afternoon. OUTLOOK: MONDAY Mixing height 2400 to 3400 ft during the morning rising above 5000 ft during the afternoon. Transport wind SSW to SW at 10 - 22 mph during the morning becoming W to WNW at 10 - 22 mph during the afternoon. Surface wind S to SW at 5 - 9 mph during the morning becoming W to NW at 8 - 14 mph during the afternoon. TUESDAY Mixing height below 1000 ft early rising to 2400 to 3400 ft by late morning rising to 3800 to 4800 ft during the afternoon. Transport wind NNW to NNE at 6 - 12 mph. Surface wind NW to NNE at 5 - 9 mph. WEDNESDAY Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising to 4000 to 5000 ft during the afternoon. Transport wind NE to ENE at 8 - 14 mph. Surface wind N to NE at 5 - 9 mph during the morning becoming NNW to NNE at 9 - 15 mph during the afternoon. 3. BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA These instructions are valid for burning conducted on Sunday, May 1, 2011. ================================================================= Coast Range Zone 601 and 612 Units should be 750 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 602 and 603 Units should be 500 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Zone 615 and 618 Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of the North Bend/Coos Bay SSRA. Zone 616 west of R8W Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 616 east of R9W Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of T29S. Call the forecaster. Zone 619 Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 620 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Cascades Zone 605, 606, 620, and 622 Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 607, 608, 609, 617, and 623 Use standard guidance matrix. (See section 5 below.) Ensure adequate distance from downwind SSRAs for smoke to dissipate. Zone 610 and 611 Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Zone 616 Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. Siskiyous Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs. ============================================================== 4. SPECIAL NOTE: Call the smoke management duty forecaster at (503) 945-7401 to discuss burning. Please do not call individual's numbers to discuss daily burning. If the forecaster is not available, leave a message and he will return your call as soon as possible. Avoid calling between 2 to 2:30 p.m. The forecast is available on the Internet at: http://oregon.gov/ODF/FIRE/fire.shtml/#Smoke_Management Please ensure your units have been planned and accomplished by checking: http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml 5. STANDARD GUIDANCE MATRIX: * Greater than 5000 ft mixing height: No burning within 5 miles of downwind SSRA. Maximum 100 tons per mile from downwind SSRA. Example: 500 ton maximum allowed if burned 5 miles from downwind SSRA. * 3000 - 5000 ft mixing height: No burning within 10 miles of downwind SSRA. Maximum 75 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 10 miles from downwind SSRA. * Less than 3000 ft mixing height: No burning within 15 miles of downwind SSRA. Maximum 50 tons per mile from downwind SSRA. Example: 750 ton maximum allowed if burned 15 miles from downwind SSRA. * All exceptions must be coordinated with the duty forecaster prior to ignition. -------------- next part -------------- An HTML attachment was scrubbed... URL: