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: Saturday, November 21, 2009       2:35 PM      Nick Yonker

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

Cold front and upper level trough are racing toward the state today and will bring increasing moisture to the region overnight tonight.  Snow level will rise briefly to near 5000 ft overnight before dropping to near 3000 ft on Sunday.  Air mass will remain unstable through Sunday with excellent smoke dispersion.  Upper level trough moves through Sunday morning to early afternoon before a ridge builds in Sunday night.  Expect excellent smoke dispersion through Sunday.

    OUTLOOK (MONDAY - WEDNESDAY):

Upper level ridge continues to build in on Monday and will hold through Wednesday.  A warm front will ride over the top and bring some increasing clouds but not any moisture.  Air mass will be quite stable and smoke dispersion poor through the period.

2.  DISPERSION

SUNDAY
Mixing height below 2000 ft early rising to 3800 - 4800 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers to 3000 - 4000 ft during the evening.

Transport wind WSW to WNW at 25 - 45 mph during the morning.  Transport wind decreases to W to WNW at 14 - 26 mph during the afternoon and evening.

Surface wind WSW to WNW at 18 - 32 mph during the morning.  Surface wind decreases to WSW to WNW at 10 - 18 mph during the afternoon and evening.

OUTLOOK:

MONDAY
Mixing height below 1000 ft early rising to 1300 to 2300 ft by late morning and through the afternoon.  Transport wind SSW to WSW at 7 - 12 mph.  Surface wind S to SW at 4 - 8 mph.

TUESDAY
Mixing height below 1000 ft early rising to 1000 to 1700 ft by late morning and through the afternoon.  Transport wind SSE to SW at 4 - 8 mph.  Surface wind light and variable during the morning becoming SE to S at 5 - 9 mph during the afternoon.

WEDNESDAY
Mixing height below 1000 ft during the morning rising to 1000 to 2000 ft during the afternoon.  Transport wind SE to SSW at 6 - 10 mph.  Surface wind light and variable during the morning becoming SE to S at 4 - 8 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 Sunday, November 22, 2009.
    ==================================================================

Avoid ignitions within 10 miles to the WSW through WNW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SW through WNW in or near drainages leading to SSRAs.  Care needed in selecting units as smoke will likely fumigate along the ground in wind prone areas.

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