SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Friday, November 12, 2010       8:10 AM      Pete Parsons



1.  DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625



FRIDAY



A flat upper-level ridge, in the eastern Gulf of Alaska, will bring a drying and cool northwesterly flow aloft to the region.  Northwesterly transport winds will turn more northerly late in the day with cool air aloft providing fair afternoon smoke dispersal conditions.  Look for a stabilizing air mass to quickly drop mixing heights in the evening.



2.  DISPERSION



TODAY

Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning.  Afternoon mixing height rises to 2500 - 3500 ft then lowers below 1000 ft during the evening.



Transport wind NW to NNE at 4 - 8 mph during the morning.  Transport wind increases to NNW to NNE at 8 - 12 mph during the afternoon and evening.



Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to NW to NNE at 4 - 8 mph during the afternoon then shifts to N to NE at 4 - 8 mph during the evening.



3.  BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER

    RANGE PORTION OF ZONE 624

This instruction is valid for burning conducted on Friday, November 12, 2010.

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Avoid ignitions within 15 miles to the NW through NE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles to the NW through NE in or near drainages leading to SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 2:30 p.m.



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4.  SPECIAL NOTE:



    The smoke management forecaster is available at (503)

    945-7401.  The smoke management forecaster is available

    to discuss specific burns.  The duty forecaster phone

    number is (503) 945-7401. Please call this number and

    not individual's numbers to discuss daily burning. Please

    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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