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: Wednesday, April 1, 2009       2:35 PM      Jim Little

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

A Pacific cold front sweeps across the region Thursday, bringing rain, blustery winds and good smoke dispersal conditions.  Transport winds should be generally westerly with good mixing heights all areas.
Expect rain, with snow at higher elevations throughout the day.

    OUTLOOK (FRIDAY - SUNDAY):

Showers will linger behind the front for Friday, but should be tapering off during the day.  Transport winds will remain generally westerly or west-northwesterly.  Higher pressure will build Friday night leading to dry weather for Saturday and Sunday.

2.  DISPERSION

THURSDAY

Zone 630 and 632:
Mixing height above 5000 ft throughout the day.

Transport wind W to WNW at 20 - 34 mph.

Surface wind WNW to NW at 10 - 22 mph during the morning.  Surface wind increases to WNW to NW at 15 - 25 mph during the afternoon then decreases to WNW to NNW at 10 - 18 mph during the evening.

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

Transport wind W to WNW at 16 - 30 mph throughout the day.

Surface wind NNW to NNE at 9 - 15 mph during the morning and afternoon.  Surface wind decreases to WNW to NNW at 8 - 12 mph during the evening.

OUTLOOK:

FRIDAY
In the west mixing height above 5000 ft throughout the day.  In the east mixing height 3300 to 4300 ft during the morning rising above 5000 ft during the afternoon.  In the west transport wind WNW to NW at 20 - 34 mph during the morning becoming WNW to NW at 10 - 22 mph during the afternoon.  In the east transport wind WNW to NW at 15 - 29 mph during the morning becoming NW to NNW at 10 - 22 mph during the afternoon.  Surface wind WNW to NW at 10 - 18 mph.

SATURDAY
Mixing height 2200 to 3200 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming ESE to SSE at 4 - 8 mph during the afternoon.  Surface wind light and variable during the morning becoming E to SE at 5 - 9 mph during the afternoon.

SUNDAY
Mixing height 3800 to 4800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SE to SSE at 13 - 25 mph.  Surface wind SE to SSE at 15 - 25 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 Thursday, April 2, 2009.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 10 miles to the W through NW of SSRAs.  No additional restrictions necessary.

Zone 633 - 638:
Avoid ignitions within 10 miles to the W through NW of SSRAs.  No additional restrictions necessary.

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