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: Friday, May 15, 2009       2:35 PM      Nick Yonker

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

Upper level ridge continues to build over the state today and will remain strong over the region tomorrow as well.  Air mass will remain stable except for a brief period of good mixing during maximum afternoon heating.  Expect sunny skies and high temperatures in the upper 70s to low 80s.  Wind flow will be light, favoring a northerly direction.  Smoke dispersion will be mostly poor to fair.

    OUTLOOK (SUNDAY - TUESDAY):

Upper ridge remains strong over the region Sunday and Monday.  A frontal system that was supposed to arrive overnight Monday/Tuesday appears much weaker.  The only effects appear to be some increased onshore wind flow. Expect continued sunny skies and warm temperatures.  Air mass will remain mostly stable and smoke dispersion poor to fair.

2.  DISPERSION

SATURDAY
Mixing height below 1000 ft early rising to 3000 - 4000 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.

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

OUTLOOK:

SUNDAY
Mixing height below 1000 ft early rising to 2800 to 3800 ft by late morning rising to 4300 to 5000 ft during the afternoon.  Transport wind SE to SSW at 5 - 9 mph during the morning becoming WSW to WNW at 6 - 12 mph during the afternoon.  Surface wind light and variable during the morning becoming SW to WNW at 4 - 8 mph during the afternoon.

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 WNW at 8 - 12 mph.  Surface wind light and variable during the morning becoming WSW to WNW at 8 - 12 mph during the afternoon.

TUESDAY
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 SW to W at 8 - 15 mph.  Surface wind light and variable during the morning becoming W to NW at 8 - 12 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 Saturday, May 16, 2009.
    ==================================================================

Avoid ignitions within 15 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs.  Recommend against burning units that will smolder significantly overnight.

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