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: Tuesday, June 15, 2010       2:40 PM      Jim Little

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

    WEDNESDAY

An upper level low pressure area continues to spin over the Pacific Northwest on Tuesday.  Skies will be mostly cloudy with a few showers.  Cooler air aloft will yield high afternoon mixing heights.  Smoke dispersal conditions will be good.  Transport winds will be generally north-northwest to northwest.

    OUTLOOK (THURSDAY-SATURDAY)

The upper level low dissipates Thursday but a broad trough remains over the region.  Most moisture should stay north of the region leaving mostly sunny skies.  Smoke dispersal conditions will be good most areas.  The trough remains for Friday but weakens and finally by Saturday weak ridging begins to build offshore.  High mixing heights should give good smoke dispersal conditions for the end of the week.

2.  DISPERSION

WEDNESDAY
Mixing height above 5000 ft throughout the day.

Transport wind NNW to N at 10 - 22 mph.

Surface wind NNW to N at 10 - 20 mph.

OUTLOOK:

THURSDAY
Mixing height below 1000 ft early rising above 5000 ft by late morning and through the afternoon.  Transport wind light and variable.  Surface wind light and variable during the morning becoming W to NW at 4 - 8 mph during the afternoon.

FRIDAY
Mixing height 2800 - 3800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

SATURDAY
Mixing height 2800 - 3800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

3.  BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER
    RANGE PORTION OF ZONE 624
This instruction is valid for burning conducted on Wednesday, June 16, 2010.
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Avoid ignitions within 10 miles to the NW through NNE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles in all directions of 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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