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 6, 2010       2:35 PM      Jim Little

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

    MONDAY

The weather system that brought rain to much of the Pacific Northwest Sunday is well to the east and dissipating by Monday.  There will be slight ridging aloft and surface high pressure centered offshore.  Skies will be generally partly cloudy western sections to mostly cloudy with a slight chance of a shower to the east.  Look for good mixing heights for generally fair to good smoke dispersal conditions.

    OUTLOOK (TUESDAY-THURSDAY)

Weak high pressure aloft develops over the region Thursday.  Expect mostly sunny skies and warmer temperatures. The warmer surface temperatures should push mixing heights to 5000 feet or above for generally good smoke dispersal conditions.  Another weather system brings rain back to the area spreading eastward Wednesday.  Amounts will be mostly less than a tenth of an inch.  Thursday will see some left-over showers.  Mixing heights will remain high Wednesday and Thursday for good smoke dispersal conditions.

2.  DISPERSION

MONDAY

Zone 630 and 632:
Mixing height 1000 - 1800 ft during the morning.  Mixing height rises above 5000 ft during the afternoon then lowers below 1000 ft during the evening.

Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to NW to N at 5 - 9 mph during the afternoon and evening.

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to NW to N at 5 - 9 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height 1100 - 2100 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 1500 - 2500 ft during the evening.

Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to W to NNW at 6 - 10 mph during the afternoon and evening.

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to WNW to NNW at 5 - 9 mph during the afternoon then becomes light and variable during the evening.

OUTLOOK:

TUESDAY
Mixing height below 1000 ft early rising to 4400 to 5000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SSE to SSW at 4 - 8 mph during the morning becoming S to SSW at 9 - 15 mph during the afternoon.  Surface wind light and variable during the morning becoming S to SSW at 8 - 12 mph during the afternoon.

WEDNESDAY
Mixing height 3500 to 4500 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SW to W at 6 - 10 mph.  Surface wind SW to W at 4 - 8 mph.

THURSDAY
Mixing height 3500 to 4500 ft during the morning rising above 5000 ft during the afternoon.  Transport wind WNW to NNW at 4 - 8 mph.  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 7, 2010.
    ==================================================================

Zone 630 and 632:
Delay ignitions until 10:00am.  Avoid ignitions within 15 miles to the NW through NE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 35 miles in all directions of SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 4:00mp.

Zone 633 - 638:
Delay ignitions until 10:00am.  Avoid ignitions within 15 miles to the W through N of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 35 miles in all directions of SSRAs.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 4:00mpm.

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