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: Saturday, October 31, 2009       2:40 PM      Nick Yonker

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

Cold front has moved by to the east and will give way to a fairly flat upper level ridge tomorrow.  Air mass will slowly stabilize overnight as skies clear.  Surface high pressure will build to the north and turn wind flow lightly offshore.  Smoke dispersion will be mostly poor to fair.

    OUTLOOK (MONDAY - WEDNESDAY):

Upper ridge will remain in place through the period keeping the air mass stable and smoke dispersion poor.  Expect mostly sunny skies.  Ridge breaks down some on Wednesday with wind becoming onshore.  Air mass will remain stable and smoke dispersion mostly poor.

2.  DISPERSION

SUNDAY
Mixing height below 1000 ft early rising to 1200 - 2200 ft by late morning.  Afternoon mixing height rises to 2000 - 3000 ft then lowers below 1000 ft during the evening.

Transport wind light and variable and controlled by local terrain.  Transport wind increases to NE to E at 5 - 9 mph during the evening.

Surface wind light and variable and controlled by local terrain.

OUTLOOK:

MONDAY
Mixing height below 1000 ft early rising to 1000 - 2000 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming W to NW at 8 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming W to NNW at 6 - 10 mph during the afternoon.

TUESDAY
Mixing height below 1000 ft early rising to 1000 - 2000 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming WNW to NW at 8 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming W to NW at 4 - 8 mph during the afternoon.

WEDNESDAY
Mixing height below 1000 ft early rising to 1000 - 1700 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming WSW to WNW at 8 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming SW to WNW at 5 - 9 mph during the afternoon.

3.  BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER
    RANGE PORTION OF ZONE 624
This instruction is valid for burning conducted on Sunday, November 1, 2009.
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Avoid ignitions within 15 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 3 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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