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: Monday, September 20, 2010       7:45 AM      Jim Little


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

Low pressure over southwest Canada will continue to bring clouds and showers to parts of northeast Oregon today.  The best chances for measurable rainfall will be over mountainous areas.  In addition pressure gradients will tighten producing breezy conditions in some areas.

2.  DISPERSION

MONDAY

Zone 630 and 632:
Mixing height 3000 - 4000 ft during the morning.  Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening.

Transport wind SW to W at 6 - 12 mph throughout the morning and afternoon.  Transport wind shifts to NW to N at 8 - 14 mph during the evening.

Surface wind SW to W at 6 - 10 mph throughout the morning and afternoon.  Surface wind shifts to NW to NNE at 4 - 8 mph during the evening.

Zone 633 - 638:
Mixing height 2400 - 3400 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 1100 - 2100 ft during the evening.

Transport wind SW to W at 6 - 12 mph throughout the morning and afternoon.  Transport wind shifts to WNW to NNW at 6 - 12 mph during the evening.

Surface wind SW to W at 6 - 12 mph throughout the morning and afternoon.  Surface wind shifts to WNW to NNW at 4 - 8 mph during the evening.

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, September 20, 2010.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 15 miles to the SW through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs.  Watch for shifting transport winds.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 4:00pm.

Zone 633 - 638:
Avoid ignitions within 15 miles to the SW through NNW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs.  Watch for shifting transport winds.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 4:00pm.

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