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: Monday, April 6, 2009       7:50 AM      Jim Little

1.  DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625
A strong upper level ridge of high pressure lies on an axis from southern Nevada to northern Idaho.  Offshore a deep upper level trough lies about 600 miles west-southwest of San Francisco and an upper trough is just off the British Columbia coast.  At the surface the highest pressures are over western Montana and northern Colorado, while a reflection of the upper level low off the California coastline is located west-southwest of San Francisco.

2.  DISPERSION

MONDAY
Mixing height 1600 - 2600 ft during the morning.  Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening.

Transport wind ESE to SSE at 10 - 16 mph.

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to ESE to SSE at 5 - 9 mph during the afternoon then becomes light and variable 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 Monday, April 6, 2009.
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Avoid ignitions within 15 miles to the E through SSE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles to the ENE through SSE in or near drainages leading to SSRAs.  Recommend against burning units that will smolder significantly overnight.

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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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