SMI Northeast (Smoke Management Instructions) (no subject)
ODF Smoke Management Instructions
smi_northeast at listsmart.osl.state.or.us
Mon Nov 15 16:24:58 PST 2010
SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS
SALEM FORESTRY WEATHER CENTER
OREGON DEPARTMENT OF FORESTRY
ISSUED: Monday, November 15, 2010 2:35 PM Jim Little
1. DISCUSSION AND FORECAST FOR NORTHEAST FORECAST AREA ZONES 630-638
A broad flat ridge is centered off the Oregon Washington coast. Upper level flow is from the west-northwest over the region. Low level (transport) flow will be generally from the west or northwest except partly cloudy skies and cool temperatures. Smoke dispersal conditions will be mostly fair to good.
OUTLOOK (WEDNESDAY - FRIDAY)
A deep low, both at the surface and aloft develops in the Gulf of Alaska and begins to move toward the Pacific Northwest Wednesday. A Pacific cold front will push into Washington then drop southward, reaching NW Oregon by late morning. This front will bring rain to the region on Thursday along with even cooler temperatures. Snow levels will drop to around 3500 feet. Smoke dispersal conditions through the outlook period should be generally fair to good.
2. DISPERSION
TUESDAY
Zone 630 and 632:
Maximum mixing height 4500 feet.
Transport wind WNW to NW at 23 - 41 mph during the morning. Transport wind decreases to WNW to NW at 19 - 33 mph during the afternoon and decreases to WNW to NW at 12 - 24 mph during the evening.
Surface wind WNW to NW at 16 - 30 mph during the morning. Surface wind decreases to WNW to NW at 12 - 24 mph during the afternoon and decreases to W to NW at 8 - 14 mph during the evening.
Zone 633 - 638:
Maximum mixing height 4500 feet.
Transport wind W to NW at 20 - 34 mph during the morning. Transport wind decreases to W to NW at 14 - 28 mph during the afternoon and decreases to W to NW at 10 - 22 mph during the evening.
Surface wind W to NW at 15 - 25 mph during the morning. Surface wind decreases to W to NW at 10 - 22 mph during the afternoon and decreases to W to NW at 9 - 15 mph during the evening.
OUTLOOK:
WEDNESDAY
Mixing height 2000 to 3000 ft during the morning rising above 5000 ft during the afternoon. In the west transport wind SSW to WSW at 15 - 29 mph during the morning becoming SW to WSW at 29 - 49 mph during the afternoon. In the east transport wind S to SW at 12 - 22 mph during the morning becoming SSW to SW at 19 - 33 mph during the afternoon. Surface wind S to SW at 9 - 15 mph during the morning becoming SSW to SW at 14 - 28 mph during the afternoon.
THURSDAY
Mixing height 1800 to 2800 ft during the morning rising to 2500 to 3500 ft during the afternoon. Transport wind SW to W at 6 - 10 mph during the morning becoming WNW to NNW at 4 - 8 mph during the afternoon. Surface wind SW to W at 4 - 8 mph during the morning becoming WNW to NNW at 4 - 8 mph during the afternoon.
FRIDAY
Mixing height below 1000 ft early rising to 2000 to 3000 ft by late morning rising to 4500 to 5000 ft during the afternoon. Transport wind SW to WSW at 8 - 12 mph. Surface wind SW to W at 4 - 8 mph.
3. BURNING INSTRUCTIONS FOR NORTHEAST OREGON ZONES 630-638
The following considerations should be adhered to in addition to
the requirements of the Oregon Smoke Management Plan. These
Instructions are valid for burning conducted on Tuesday, November 16, 2010.
==================================================================
Zone 630 and 632:
Avoid ignitions within 10 miles to the WNW through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 10 miles to the SSW through NW in or near drainages leading to SSRAs. Care needed in selecting units as smoke will likely fumigate along the ground in wind prone areas. No additional restrictions necessary.
Zone 633 - 638:
Avoid ignitions within 10 miles to the W through NW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 15 miles to the S through NW in or near drainages leading to SSRAs. Care needed in selecting units as smoke will likely fumigate along the ground in wind prone areas.
=========================================================
4. SPECIAL NOTE:
The smoke management forecaster is available at (503)-
945-7401. Please call this number and not individual's
numbers to discuss daily burning. For large burns (over
2000 tons) or burns extending over a considerable period,
please request a special forecast. Avoid calling before
8 a.m. and between 2 to 3 p.m.
This 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
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