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: Tuesday, June 8, 2010       2:35 PM      Jim Little

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

    WEDNESDAY

An upper level low pressure area will move to off the Washington coast Wednesday.  This will give southwesterly flow aloft to the region.  A Pacific weather system embedded in that southwesterly flow will spread rain eastward beginning in the morning.  Amounts should be around 1/10th of an inch.  High mixing heights will give good smoke dispersal conditions.

    OUTLOOK (THURSDAY-SATURDAY)

The upper low weakens - the remaining trough slowly moves east across the Pacific Northwest.  There will still be enough moisture for some scattered showers.  Mixing heights should be quite high for good smoke dispersal conditions.  By Friday upper ridging develops in the eastern Pacific.  Dry and warmer conditions are on tap for Friday and Saturday.  Warmer afternoon temperatures will push mixing heights above 5000 feet for generally good smoke dispersal conditions.

2.  DISPERSION

WEDNESDAY

Zone 630 and 632:
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 1800 - 2800 ft during the evening.

Transport wind SW to WSW at 10 - 22 mph during the morning.  Transport wind shifts to W to NW at 10 - 18 mph during the afternoon and evening.

Surface wind SW to WSW at 9 - 15 mph during the morning.  Surface wind shifts to W to NNW at 6 - 12 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height 2300 - 3300 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 1200 - 2200 ft during the evening.

Transport wind WSW to WNW at 10 - 16 mph during the morning.  Transport wind decreases to W to NW at 6 - 12 mph during the afternoon and evening.

Surface wind WSW to WNW at 8 - 14 mph.

OUTLOOK:

THURSDAY
In the west mixing height 2400 to 3400 ft during the morning rising above 5000 ft during the afternoon.  In the east mixing height 1800 to 2800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind WSW to WNW at 10 - 20 mph during the morning becoming WNW to NW at 12 - 22 mph during the afternoon.  Surface wind WSW to WNW at 8 - 14 mph.

FRIDAY
Mixing height 3500 to 4500 ft during the morning rising above 5000 ft during the afternoon.  Transport wind NW to NNE at 4 - 8 mph.  Surface wind light and variable during the morning becoming NW to NNE at 4 - 8 mph during the afternoon.

SATURDAY
Mixing height 3000 to 4000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming NNE to ENE at 4 - 8 mph during the afternoon.  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 Wednesday, June 9, 2010.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 10 miles to the SW through NNW of SSRAs.  Watch for shifting transport winds.  No additional restrictions necessary.

Zone 633 - 638:
Avoid ignitions within 15 miles to the SW through NNW 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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