SMI South Central (Smoke Management Instructions) (no subject)

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Monday, December 6, 2010       7:50 AM      Jim Little



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



Upper air charts show a strong low pressure area about 900 miles west of Oregon.  This is producing a generally southwesterly flow aloft over the region.  This morning, however, a strong upper level disturbance is moving southwest to northeast in the broad scale flow producing shifting winds aloft and was producing some precipitation.  Most of the precip has moved to the north of the region and skies will be partly sunny this afternoon.  Mixing heights will generally be in the 2500 to 3500 foot range for marginal to fair smoke dispersal conditions.  Transport winds will be mostly southwesterly.





2.  DISPERSION



MONDAY

Mixing height above 5000 ft during the morning.  Mixing height lowers to 1800 - 2800 ft during the afternoon then rises to 2600 - 3600 ft during the evening.



Transport wind SSW to SW at 18 - 30 mph.



Surface wind S to SW at 8 - 14 mph.



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

    RANGE PORTION OF ZONE 624

This instruction is valid for burning conducted on Monday, December 6, 2010.

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Avoid ignitions within 12 miles to the SSW through WSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the S through WSW in or near drainages leading to SSRAs.



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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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