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: Saturday, April 25, 2009       2:35 PM      Nick Yonker

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

Dry cold front moved through early this morning to bring brisk westerly winds to the region.  Cool, northerly air moving in aloft has made for good mixing.  Northerly flow will remain over the region tomorrow but temperatures will warm up a little more.  Expect mostly fair to good smoke dispersion.

    OUTLOOK (MONDAY - WEDNESDAY):

Next surge of northerly flow moves in Monday as an upper low drops southward out of Canada.  Upper low will move right over the state Tuesday kicking off showers over much of the area.  Low will remain over the area Wednesday but gradually weaken.  Scattered showers will continue.  Expect good to excellent mixing and smoke dispersion throughout the period.

2.  DISPERSION

SUNDAY
Mixing height below 1000 ft early rising above 5000 ft by late morning.  Mixing height lowers below 1000 ft during the evening.

Transport wind NW to N at 6 - 12 mph.

Surface wind NW to N at 6 - 12 mph during the morning and afternoon.  Surface wind becomes light and variable and controlled by local terrain during the evening.

OUTLOOK:

MONDAY
Mixing height below 1000 ft early rising to 4200 to 5000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming WNW to NNW at 6 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming NW to N at 6 - 10 mph during the afternoon.

TUESDAY
Mixing height below 1000 ft early rising to 3500 to 4500 ft by late morning rising above 5000 ft during the afternoon.  Transport wind WNW to NW at 8 - 12 mph.  Surface wind W to NW at 6 - 12 mph during the morning becoming NW to N at 8 - 12 mph during the afternoon.

WEDNESDAY
Mixing height 3200 to 4200 ft during the morning rising above 5000 ft during the afternoon.  Transport wind NW to N at 8 - 12 mph.  Surface wind NW to N at 6 - 12 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 Sunday, April 26, 2009.
    ==================================================================

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.

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


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://omls.oregon.gov/pipermail/smi_northeast/attachments/20090425/a684c351/attachment.html>