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 29, 2010       2:35 PM      Jim Little

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

    WEDNESDAY

Cool weather will continue. A broad upper trough remains over the eastern Pacific and the Pacific Northwest on Wednesday.  Most areas will see partly cloudy skies. Temperatures will be 3 to 7 degrees below average.  Mixing heights should climb to above 5000 feet throughout the region for good smoke dispersal conditions.

    OUTLOOK (THURSDAY-SATURDAY)

A progressive disturbance moving across the Pacific Ocean deepens the trough over the area on Thursday.  This supports a weak Pacific front that will move onshore late in the day.  This will bring some light rain, mainly to northern sections overnight Thursday and Friday.  Maximum afternoon mixing heights should be above 5000 feet throughout the outlook period.  Thursday's partly cloudy skies will turn mostly sunny for Friday and Saturday.

2.  DISPERSION

WEDNESDAY

Zone 630 and 632:
Mixing height 2500 - 3500 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 NNW to NNE at 5 - 9 mph during the afternoon and increases to NNW to NNE at 8 - 14 mph during the evening.

Surface wind NNW to NE at 4 - 8 mph throughout the day.

Zone 633 - 638:
Mixing height 1800 - 2800 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 2000 - 3000 ft during the evening.

Transport wind NW to N at 4 - 8 mph throughout the day.

Surface wind NW to N at 5 - 9 mph.

OUTLOOK:

THURSDAY
Mixing height below 1000 ft early rising above 5000 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming NW to N at 6 - 10 mph during the afternoon.  Surface wind light and variable during the morning becoming NW to N at 6 - 12 mph during the afternoon.

FRIDAY
Mixing height 2900 to 3900 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

SATURDAY
Mixing height 3200 to 4200 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming WSW to WNW at 4 - 8 mph during the afternoon.  Surface wind light and variable during the morning becoming WSW to NW at 4 - 8 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 Wednesday, June 30, 2010.
    ==================================================================

        Zone 630 and 632:
Avoid ignitions within 12 miles to the NW through NE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles in all directions of SSRAs. Verify transport winds away from SSRAs if burning in any other direction.

Zone 633 - 638:
Avoid ignitions within 12 miles to the WNW through NNE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles in all directions of SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.

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