SMI Northeast (Smoke Management Instructions) Northeast Oregon 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 NORTHEAST FORECAST AREA ZONES 630-638



TODAY



A weak cold front will bring a few rain and snow showers to mainly the eastern mountains this morning with the snow level near 3500 feet.  A flat upper-level ridge, in the eastern Gulf of Alaska, will bring a drying and cool northwesterly flow aloft to the region in the afternoon.  Transport winds will turn west to northwesterly with 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 1800 - 2800 ft by late morning.  Afternoon mixing height rises to 2600 - 3600 ft then lowers below 1000 ft during the evening.



Transport wind WNW to NNW at 4 - 8 mph.



Surface wind light and variable and controlled by local terrain.



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 Friday, November 12, 2010.

    ==================================================================



Avoid ignitions within 15 miles to the W through NNE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles to the SW through NNE 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. 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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