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: Wednesday, June 23, 2010       2:35 PM      Nick Yonker

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

Upper level trough will reside over the region through tomorrow bringing variable clouds and a chance of an afternoon shower or thundershower over mainly the mountains.  Air mass will be mostly stable during the morning and then destabilize during the afternoon.  Expect fair to good smoke dispersion.

    OUTLOOK (FRIDAY - SUNDAY):

Upper level trough will remain over the region Friday before shifting eastward Saturday and giving way to an upper level ridge for the weekend.  The chance of afternoon showers or thundershowers continues into Friday, then diminishes for Saturday and Sunday as the ridge moves overhead.  Smoke dispersion will be mostly good Friday, then worsens over the weekend.

2.  DISPERSION

THURSDAY
Mixing height below 1000 ft early, rising to 2700 - 3700 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers to 1700 - 2700 ft during the evening.

Transport wind NW to N at 5 - 9 mph during the morning.  Transport wind becomes light and variable and controlled by local terrain during the afternoon and evening.

Surface wind light and variable and controlled by local terrain.

OUTLOOK:

FRIDAY
Mixing height below 1000 ft early rising to 3800 to 4800 ft by late morning rising above 5000 ft during the afternoon.  Transport wind W to NW at 4 - 8 mph during the morning becoming W to NW at 9 - 15 mph during the afternoon.  Surface wind light and variable during the morning becoming WNW to NW at 8 - 14 mph during the afternoon.

SATURDAY
Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming WNW to NNW at 8 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming W to NW at 5 - 9 mph during the afternoon.

SUNDAY
Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising to 4000 to 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming SW to WNW at 5 - 9 mph during the afternoon.  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 Thursday, June 24, 2010.
    ==================================================================

Avoid ignitions within 12 miles to the W through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the W through N in or near drainages leading to SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.

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