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, May 7, 2009       2:35 PM      Nick Yonker

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

Minor upper level ridge starts building into the state tonight through Friday.  Air mass will dry and warm slowly.  Expect clearing skies tonight and a mostly sunny day tomorrow.  Wind flow will turn northerly as surface high pressure starts building in.  Expect fair to good smoke dispersion.

    OUTLOOK (SATURDAY - MONDAY):

Upper level ridge continues to build over the region on Saturday and Sunday before shifting eastward Monday as an upper level trough and cold front approach.  Effects of the incoming front will be felt Sunday afternoon in the form of a marine push.  Air mass will stabilize further Saturday and Sunday under the ridge, then destabilize on Monday.  Smoke dispersion will be mostly fair Saturday and Sunday, then improve Monday.

2.  DISPERSION

FRIDAY
Mixing height below 1000 ft early rising to 4000 - 5000 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers below 1000 ft during the evening.

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

Surface wind light and variable and controlled by local terrain during the morning.  Surface wind increases to NW to NNE at 4 - 8 mph during the afternoon and evening.

OUTLOOK:

SATURDAY
Mixing height below 1000 ft early rising to 3300 to 4300 ft by late morning rising above 5000 ft during the afternoon.  Transport wind light and variable during the morning becoming NW to NNE at 5 - 9 mph during the afternoon.  Surface wind light and variable during the morning becoming NW to N at 4 - 8 mph during the afternoon.

SUNDAY
Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising to 4000 to 5000 ft during the afternoon.  Transport wind SSW to SW at 8 - 12 mph.  Surface wind S to SW at 4 - 8 mph.

MONDAY
Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising to 4500 to 5000 ft during the afternoon.  Transport wind WSW to W at 15 - 25 mph during the morning becoming WSW to WNW at 18 - 32 mph during the afternoon.  Surface wind WSW to WNW at 10 - 18 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, May 8, 2009.
    ==================================================================

Avoid ignitions within 12 miles in all directions 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


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