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, November 13, 2009       2:35 PM      Nick Yonker

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

Cold front and upper level low are moving through this afternoon and will give way to a ridge tomorrow.  Air mass will remain quite cool aloft so expect little stabilization until tomorrow evening.  Clouds will dissipate tomorrow, giving way to clearing skies.  Expect mostly fair to good smoke dispersion.

    OUTLOOK (SUNDAY - TUESDAY):

Upper level ridge slides to the east by Sunday with increasing clouds from a warm front overrunning the ridge.  Moisture is not expected however.  Air mass will continue to stabilize.  Upper level trough in the eastern Pacific will slowly develop and move toward the region through Monday and Tuesday.  Southerly wind flow will increase during the period, so even though the air mass will be fairly stable, smoke dispersion should be at least fair.

2.  DISPERSION

SATURDAY
Mixing height above 5000 ft during the morning and afternoon.  Mixing height lowers below 1000 ft during the evening.

Transport wind WNW to NNW at 6 - 10 mph during the morning.  Transport wind shifts to SW to W at 5 - 9 mph during the afternoon and evening.

Surface wind W to NNW at 4 - 8 mph during the morning.  Surface wind becomes light and variable and controlled by local terrain during the afternoon then increases to SSE to SW at 4 - 8 mph during the evening.

OUTLOOK:

SUNDAY
Mixing height below 1000 ft early rising to 1700 to 2700 ft by late morning rising to 2300 to 3300 ft during the afternoon.  Transport wind S to SW at 10 - 20 mph.  Surface wind SSE to SSW at 6 - 12 mph.

MONDAY
Mixing height below 1000 ft early rising to 1000 to 2000 ft by late morning and through the afternoon.  Transport wind SE to SSW at 10 - 18 mph.  Surface wind SE to S at 6 - 10 mph.

TUESDAY
Mixing height below 1000 ft early rising to 1000 to 2000 ft by late morning and through the afternoon.  Transport wind SSE to S at 12 - 24 mph.  Surface wind SE to S at 9 - 15 mph.

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, November 14, 2009.
    ==================================================================

Avoid ignitions within 12 miles to the S through NNW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the S through NNW in or near drainages leading to SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.  Watch for shifting transport winds.  Complete ignitions by 3 p.m.

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