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: Thursday, October 8, 2009       2:35 PM      Nick Yonker

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

Upper level ridge remains in the eastern Pacific bringing dry N to NW'erly flow aloft over the region.  A dry cold front will drop southward tomorrow bringing some cooling aloft.  The front may produce a few clouds and a chance of a sprinkle but for the most part it will be a dry front.  Air mass may destabilize a little or stay about the same as today.  Expect mostly fair smoke dispersion.

    OUTLOOK (SATURDAY - MONDAY):

Cooler northerly flow continues to drop southward into the region into early Sunday bringing chilly mornings and cooler days.  Air mass stability will remain about the same.  Expect mostly clear skies under northerly flow.  Northerly flow slips to the east Sunday as a minor and transitory ridge builds in.  This ridge will move off to the east as a well organized trough and front move in beginning Monday.  Expect increasing southerly winds Monday and improving smoke dispersion.

2.  DISPERSION

FRIDAY
Mixing height below 1000 ft early rising to 2500 - 3500 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers to 2000 - 3000 ft during the evening.

Transport wind NNW to NNE at 8 - 16 mph.

Surface wind NNW to NNE at 9 - 14 mph during the morning and afternoon.  Surface wind decreases to N to NE at 5 - 9 mph during the evening.

OUTLOOK:

SATURDAY
Mixing height below 1000 ft early rising to 2800 to 3800 ft by late morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming NNW to NE at 6 - 10 mph during the afternoon.  Surface wind light and variable during the morning becoming NNW to NE at 5 - 9 mph during the afternoon.

SUNDAY
Mixing height below 1000 ft early rising to 4500 to 5000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind NNW to NNE at 4 - 8 mph.  Surface wind light and variable.

MONDAY
Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3500 to 4500 ft during the afternoon.  Transport wind SE to S at 9 - 15 mph.  Surface wind ESE to S 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 Friday, October 9, 2009.
    ==================================================================

Avoid ignitions within 12 miles to the NNW through NE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the NNW through NE in or near drainages leading to SSRAs.  Complete ignitions by 4 p.m.

    =========================================================
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/20091008/08e54f2e/attachment.html>