[willamette-fcst] Forecast - Tuesday, April 8th, 2008
Willamette Valley Ag/Burning Forecast
willamette-fcst at listsmart.osl.state.or.us
Tue Apr 8 15:54:22 PDT 2008
Daily Smoke Management Forecast
Oregon Department of Agriculture
Smoke Management Program
Weather Outlook and Field Burning Advisory for Willamette Valley Growers and Fire Districts.
Tuesday, April 8, 2008 at 4:45 pm.
Burn Advisory For Wednesday, April 9, 2008:
Agricultural burning is allowed. Suggested burn times are from 11:00 am until 6:00 pm.
Straw stack burning is allowed from 11:00 am until 6:00 pm.
Satellite imagery continued to show mostly cloudy skies over
the Pacific Northwest late this afternoon with an
upper-level trough producing scattered rain and snow showers
across the region. The snow level was all the way down to
about 1500 feet over Northern Oregon this morning and was
estimated to be near 2000 feet this afternoon.
It was a crisp afternoon across the valley with highs only
climbing to near 50 degrees. That is about 10 degrees below
normal for early April. Cold air aloft was combining with
daytime heating to enhance some of the showers over
Northwestern Oregon this afternoon. Doppler radar was
showing a small group of strong showers, which could produce
hail, approaching the Hillsboro area late this afternoon.
Lighter shower activity dotted the remainder of the valley.
Mostly cloudy skies will hold valley temperatures above the
freezing mark overnight, again, with lows genrally in the
mid to upper 30s. We may get a brief break from the rain
early Wednesday with a warm front bringing back a chance of
light rain Wednesday evening through early Thursday...mainly
over the northern valley. Snow levels will rise from 1500
feet tonight to about 3500 feet by late Wednesday. Valley
temperatures will begin to rebound on Wednesday with highs
climbing into the mid 50s.
S 3-6 Wednesday morning, SW 5-12 Wednesday afternoon.
SSW 10 Wednesday morning, WSW 10-15 Wednesday afternoon.
Atmospheric Ventilation Conditions:
Maximum mixing height Wednesday will be near 5000 feet. Ventilation index 50.
Salem\'s high temperature Wednesday will be near 55.
Minimum relative humidity will be near 55%.
Salem sunset tonight: 7:49 pm; sunrise Wednesday: 6:37 am; Sunset Wednesday: 7:51 pm.
A ridge of high pressure is forecast to begin a drying and
warming process on Thursday that will likely bring produce our
warmest temperatures so far this year Friday and Saturday. Highs
may punch into the low 70s by Saturday.
The long-range models are still not consistent beyond Saturday, so
my confidence in the forcast for Sunday through Tuesday is
lower than average. Some of the computer models are
predicting a transition back to a cool and damp weather
pattern as early as Satruday night, while others hold onto a
warm ridge through early next week. I am holding firm on my
forecast of a return to cooler and damp conditions.
Wed (09 Apr): Mostly Cloudy. Increasing Chance of Light Rain Late...Mainly North. 35/55
Thu (10 Apr): Chance of Sprinkles Early...Mainly North. Afternoon Clearing. 38/60
Fri (11 Apr): Mostly Sunny and Warmer. 37/68
Sat (12 Apr): Mostly Sunny and Warm. Increasing Clouds Late. 40/70
Sun (13 Apr): Chance of Rain and Cooler. Snow Level Dropping to 4000 Feet Late. 42/63
Mon (14 Apr): Chance of Rain with Mountain Snow. Snow Level 3000 Feet. 40/56
Tue (15 Apr): Decreasing Showers. Snow Level 2000 Feet...Rising to 4000 Feet Late. 38/56
Wed (16 Apr): Partly Cloudy. Slight Chance of Showers. Snow Level 4000 Feet. 38/59
weather at oda.state.or.us
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