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, June 5, 2009       2:35 PM      Nick Yonker

****Due to decreased burning and the onset of fire season, this will be the last written forecast and instruction for the spring burning season.  If you wish to burn while we're not writing forecasts, please give us a call at 503-945-7401 to coordinate.  Written forecasts and instructions will begin again in the fall when burning increases.****

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

Upper level low will gradually dissipate today and move to the east.  Showers will be on the decrease tonight.  Upper level flow will then turn more northerly as a trough moves down from Canada.  Low level flow will maintain an onshore flow.  Expect mostly cloudy skies with a continued chance of some light showers on Saturday.  Air mass will be mostly unstable and with modest onshore flow, will make for fair to good smoke dispersion.

    OUTLOOK (SUNDAY - TUESDAY):

Upper level flow turns NW'erly Sunday and Monday with low level flow light but favoring onshore flow.  Expect mostly fair skies with some morning low clouds but some clearing during the day.  Another trough develops off the coast later Monday and moves in Tuesday, bringing an increased chance of moisture during the afternoon.  Air mass will gradually stabilize through the period.  Smoke dispersion will be fair to good through the period.

2.  DISPERSION

SATURDAY
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 2500 - 3500 ft during the evening.

Transport wind WNW to NNW at 10 - 18 mph.

Surface wind WNW to NNW at 7 - 12 mph.

OUTLOOK:

SUNDAY
Mixing height below 1000 ft early rising above 5000 ft by late morning and through the afternoon.  Transport wind WNW to NNW at 5 - 9 mph.  Surface wind light and variable 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 above 5000 ft during the afternoon.  Transport wind SW to W at 5 - 9 mph 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.

TUESDAY
Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SW to W at 6 - 10 mph during the morning becoming WNW to NW at 9 - 15 mph during the afternoon.  Surface wind SW to WNW at 5 - 9 mph during the morning becoming WNW to NW at 9 - 15 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 Saturday, June 6, 2009.
    ==================================================================

Avoid ignitions within 10 miles to the WNW through NNW 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.

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