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: Friday, October 30, 2009       2:35 PM      Nick Yonker

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

Upper level ridge will move off to the east tonight giving way to a cold front that will move through the region on Saturday.  The front will provide a brief burst of rain to most areas, but overall, moisture amounts will be fairly light.  Cooler air follows the front but since the trough is not too deep, snow levels will not get as low as earlier in the week.  Air mass briefly destabilizes tomorrow afternoon as the trough passes, providing decent smoke dispersion.

    OUTLOOK (SUNDAY - TUESDAY):

Upper level ridge rebuilds rather quickly on Sunday with the air mass stabilizing during the evening.  Upper ridge will remain over the state for the remainder of the period further stabilizing the air mass.  Expect mostly sunny skies.

2.  DISPERSION

SATURDAY
Mixing height below 1000 ft early rising to 2200 - 3200 ft by late morning.  Afternoon mixing height rises to 3500 - 4500 ft and continues to rise to 4000 - 5000 ft during the evening.

Transport wind SW to W at 10 - 22 mph.

Surface wind SW to W at 8 - 14 mph during the morning.  Surface wind shifts to W to NW at 8 - 14 mph during the afternoon then decreases to WSW to NW at 5 - 9 mph during the evening.

OUTLOOK:

SUNDAY
Mixing height below 1000 ft early rising to 2200 to 3200 ft by late morning rising to 4000 to 5000 ft during the afternoon.  Transport wind NW to N at 6 - 10 mph.  Surface wind light and variable.

MONDAY
Mixing height below 1000 ft early rising to 1500 to 2500 ft by late morning and through the afternoon.  Transport wind SSE to SSW at 5 - 9 mph during the morning becoming SW to W at 6 - 10 mph during the afternoon.  Surface wind light and variable.

TUESDAY
Mixing height below 1000 ft early rising to 1000 to 2000 ft by late morning and through the afternoon.  Transport wind SW to W at 6 - 10 mph during the morning becoming WSW to WNW at 8 - 12 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 Saturday, October 31, 2009.
    ==================================================================

Avoid ignitions within 10 miles to the SW through NW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SW 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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