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, June 14, 2010       2:35 PM      Jim Little

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

    TUESDAY

An upper level low drops in from the northwest during the day Tuesday.  Skies will be partly to mostly cloudy with scattered showers.  Relatively cool air aloft will destabilize the atmosphere and help push maximum mixing heights to above 5000 feet.  This will give generally good smoke dispersal conditions to the region.

    OUTLOOK (WEDNESDAY-FRIDAY)

The upper low moves southeast into southern Idaho on Wednesday.  Cooler daytime temperatures will limit maximum mixing heights a bit but smoke dispersal conditions should be at least fair to good most areas.  There will still be enough moisture for some scattered showers.  By Thursday the upper level low will move east northeast into south-central Canada but some troughiness will hold back across the Pacific Northwest.  Friday looks dry but partly to mostly cloudy.  Mixing heights both Thursday and Friday should be quite high yielding generally good smoke dispersal conditions.

2.  DISPERSION

TUESDAY

Zone 630 and 632:
Mixing height 3000 - 4000 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 3400 - 4400 ft during the evening.

Transport wind NW to N at 8 - 12 mph during the morning.  Transport wind increases to NW to NNW at 12 - 22 mph during the afternoon and increases to NW to NNW at 14 - 28 mph during the evening.

Surface wind NW to N at 8 - 14 mph during the morning.  Surface wind increases to NW to N at 10 - 20 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height 3000 - 4000 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 2800 - 3800 ft during the evening.

Transport wind WNW to NNW at 8 - 12 mph throughout the day.

Surface wind WNW to NNW at 8 - 12 mph.

OUTLOOK:

WEDNESDAY
Mixing height 1700 to 2700 ft during the morning rising to 3500 to 4500 ft during the afternoon.  Transport wind WNW to NNW at 10 - 16 mph during the morning becoming NW to NNW at 12 - 24 mph during the afternoon.  Surface wind WNW to NNW at 8 - 12 mph.

THURSDAY
Mixing height 2800 to 3800 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

FRIDAY
Mixing height 2800 to 3800 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

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 Tuesday, June 15, 2010.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 12 miles to the NW through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the WNW through N in or near drainages leading to SSRAs.  Care needed in selecting units as smoke will likely fumigate along the ground in wind prone areas.

Zone 633 - 638:
Avoid ignitions within 12 miles to the WNW through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the WNW through N 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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