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: Thursday, June 4, 2009       2:35 PM      Nick Yonker

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

Upper level low off the central California coast will continue spinning showers and thundershowers over the state today and tonight before moving inland and weakening on Friday.  Air mass will destabilize some under the low through tomorrow before stabilizing again over the weekend.  Wind flow will become more onshore bringing breezy NW winds tomorrow.  Smoke dispersion will be mostly fair to good.

    OUTLOOK (SATURDAY - MONDAY):

As the upper low to the south dissipates a trough will drop down from the north and then move to the east.  Air mass will generally dry with the chance of showers or thundershowers decreasing.  Expect mostly fair skies with seasonable temperatures.  Air mass will be mostly stable during the night and early morning hours but destabilize with the heating of the day.  Wind flow will slowly decrease through the period.  Smoke dispersion will remain fair.

2.  DISPERSION

FRIDAY
Mixing height below 3000 ft early rising above 5000 ft by late morning.  Mixing height lowers to 2500 - 3500 ft during the evening.

Transport wind NW to N at 10 - 20 mph.

Surface wind WNW to NNW at 4 - 8 mph during the morning.  Surface wind increases to WNW to NNW at 10 - 16 mph during the afternoon and evening.

OUTLOOK:

SATURDAY
Mixing height 2300 to 3300 ft during the morning rising to 4200 to 5000 ft during the afternoon.  Transport wind WNW to NW at 10 - 20 mph.  Surface wind SW to WNW at 6 - 10 mph during the morning becoming NW to NNW at 10 - 16 mph during the afternoon.

SUNDAY
Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising to 4500 to 5000 ft during the afternoon.  Transport wind NW to NNW at 10 - 16 mph.  Surface wind S to SW at 5 - 9 mph during the morning becoming WNW to NNW at 8 - 12 mph during the afternoon.

MONDAY
Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming WNW to NW at 9 - 15 mph during the afternoon.  Surface wind light and variable during the morning becoming W to NW at 8 - 12 mph during the afternoon.

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 Friday, June 5, 2009.
    ==================================================================

Avoid ignitions within 10 miles to the NW through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the WNW through N in or near drainages leading to SSRAs.

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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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