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: Sunday, June 13, 2010       2:35 PM      Jim Little

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

    MONDAY

The upper ridge that brought sunshine to much of Oregon over the weekend moves east on Monday.  Upper flow becomes southwesterly.  Moisture will be limited but expect partly cloudy skies and there is a slight chance of afternoon thunderstorms.  Cooling aloft will keep afternoon mixing heights quite high for good smoke dispersal conditions.  Transport winds will be generally north or northwesterly.

    OUTLOOK (TUESDAY-THURSDAY)

An upper level low drops down the British Columbia coastline and across northwest Washington during the day Tuesday.  This will increase the southwesterly flow aloft.  Widely scattered afternoon showers are again likely.  High mixing heights will give good smoke dispersal conditions.  The upper level low covers the entire Pacific Northwest by Wednesday, increasing southwesterly flow aloft.  A few afternoon showers or thunderstorms is again a possibility.  Fair to good smoke dispersal conditions.  Thursday will still see an upper level trough over the region, but more sunshine should drive afternoon mixing heights higher for good smoke dispersal conditions.

2.  DISPERSION

MONDAY

Zone 630 and 632:
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 3600 - 4600 ft during the evening.

Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to NNW to N at 12 - 22 mph during the afternoon and increases to NNW to N at 14 - 28 mph during the evening.

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to NW to N at 10 - 16 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 1400 - 2400 ft during the evening.

Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to NNW to NNE at 8 - 12 mph during the afternoon and evening.

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to NNW to NNE at 6 - 12 mph during the afternoon and evening.

OUTLOOK:

TUESDAY
Mixing height below 1000 ft early rising to 2700 to 3700 ft by late morning rising above 5000 ft during the afternoon.  Transport wind WNW to NNW at 6 - 12 mph.  Surface wind WNW to NNW at 4 - 8 mph during the morning becoming NW to N at 8 - 14 mph during the afternoon.

WEDNESDAY
Mixing height 2800 to 3800 ft during the morning rising to 4000 to 5000 ft during the afternoon.  Transport wind W to WNW at 12 - 24 mph.  Surface wind WSW to WNW at 10 - 16 mph.

THURSDAY
Mixing height 2800 to 3800 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  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 Monday, June 14, 2010.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 10 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles in all directions of SSRAs.

Zone 633 - 638:
Avoid ignitions within 12 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles in all directions of SSRAs.  Complete ignitions by 4:00pm

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