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: Sunday, November 15, 2009       2:35 PM      Jim Little

1.  DISCUSSION AND FORECAST FOR NORTHEAST FORECAST AREA ZONES 630-638

A Pacific cold front will stall in western Oregon during the day on Monday leaving areas east of the Cascades dry.  Warm southerly flow will stabilize conditions and mixing heights will be somewhat suppressed.  Smoke dispersal conditions should be marginal to fair with a generally southerly flow for transport winds.

    OUTLOOK (TUESDAY - THURSDAY):

By Tuesday some rain crosses the Cascades as a cold front moves east.  Atmospheric stability will decrease for better smoke dispersal conditions.  Wednesday will be dry but high mixing heights will continue.  Thursday another Pacific cold front moves into western Oregon with rain spreading to east of the Cascades during the day.  Expect good to excellent smoke dispersal conditions through the outlook period.


2.  DISPERSION

MONDAY
Mixing height 2000 - 3000 ft throughout the day.

Transport wind S to SW at 10 - 20 mph.

Surface wind S to SW at 8 - 12 mph.

OUTLOOK:

TUESDAY
Mixing height 2000 to 3000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SSW to SW at 12 - 22 mph.  Surface wind SSW to SW at 10 - 16 mph.

WEDNESDAY
Mixing height 4500 to 5000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind WSW to WNW at 10 - 20 mph.  Surface wind WSW to NW at 6 - 10 mph.

THURSDAY
Mixing height 4500 to 5000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SSW to SW at 10 - 20 mph.  Surface wind S to SW at 6 - 10 mph.

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 Monday, November 16, 2009.
    ==================================================================

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

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