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, May 3, 2009       2:35 PM      Jim Little

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


Upper air charts show a deep, slow moving low in the southern Gulf of Alaska.  A strong west-to-east jet to the south of that low will push moisture into the Pacific Northwest much of the week.  Rainfall will be limited early Monday but increase Monday evening as a Pacific cold front moves in from the west.  Transport winds will be generally southerly.


    OUTLOOK (TUESDAY - THURSDAY):

Expect scattered showers Tuesday with rain increasing from a new front Tuesday night.  Wednesday will se post frontal showers and by Thursday expect just a few mountain showers.  Transport winds through the extended period will be mostly west through southwest until Thursday when they will be more west-southwest through west-northwest.  Smoke dispersal conditions should good each afternoon through the period.

2.  DISPERSION

MONDAY

Zone 630 and 632:
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 2000 - 3000 ft during the evening.

Transport wind S to SSW at 12 - 24 mph during the morning.  Transport wind increases to SSE to SSW at 21 - 37 mph during the afternoon and increases to S to SSW at 25 - 43 mph during the evening.

Surface wind SE to SSW at 6 - 10 mph during the morning.  Surface wind increases to SE to SSW at 9 - 15 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height above 5000 ft throughout the day.

Transport wind SSE to SSW at 10 - 18 mph during the morning.  Transport wind increases to SSE to S at 19 - 33 mph during the afternoon and increases to S to SSW at 23 - 41 mph during the evening.

Surface wind ESE to S at 4 - 8 mph during the morning.  Surface wind increases to ESE to SSE at 8 - 12 mph during the afternoon and evening.

OUTLOOK:

TUESDAY
Mixing height below 1000 ft early rising to 5000 to 5000 ft by late morning and through the afternoon.  Transport wind SW to W at 10 - 20 mph.  Surface wind SE to SSW at 6 - 12 mph during the morning becoming NW to N at 6 - 12 mph during the afternoon.

WEDNESDAY
Mixing height below 1000 ft early rising to 5000 to 5000 ft by late morning and through the afternoon.  Transport wind SW to WSW at 8 - 14 mph during the morning becoming W to NW at 13 - 25 mph during the afternoon.  Surface wind SW to WSW at 8 - 12 mph during the morning becoming W to NW at 13 - 25 mph during the afternoon.

THURSDAY
Mixing height 3500 to 4500 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming NW to NNE at 6 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming NW to NNE at 6 - 12 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 Monday, May 4, 2009.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 10 miles to the SSE through SSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SSE through WSW in or near drainages leading to SSRAs.

Zone 633 - 638:
Avoid ignitions within 10 miles to the SSE through SSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SSE through WSW 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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