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, October 2, 2009       2:35 PM      Nick Yonker

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

Upper level low will be dropping into the state tonight and tomorrow bringing cool northerly flow over the region.  Expect some scattered showers but amounts will be light.  Snow level will be 4500 - 5500 ft.  Air mass will remain unstable and smoke dispersion good.

    OUTLOOK (SUNDAY - TUESDAY):

Upper level low will remain over the region into Sunday but will be drifting to the south.  Expect continued showers with likely greater amounts than Saturday.  The low will finally weaken and exit the region by Monday with cool, northerly flow remaining as an upper ridge struggles to nose in to the north.  Showers diminish.  Ridge will turn wind flow to northerly on Monday and offshore on Tuesday.  Air mass will remain unstable through Monday before stabilizing Monday night and Tuesday.

2.  DISPERSION

SATURDAY
Mixing height below 3000 ft early rising above 5000 ft by late morning.

Transport wind NNW to N at 8 - 14 mph during the morning.  Transport wind increases to NNW to N at 10 - 22 mph during the afternoon and evening.

Surface wind WNW to NNW at 6 - 10 mph during the morning.  Surface wind increases to NW to NNW at 10 - 16 mph during the afternoon and evening.

OUTLOOK:

SUNDAY
Mixing height 3500 to 4500 ft during the morning rising above 5000 ft during the afternoon.  Transport wind NNW to N at 10 - 18 mph.  Surface wind NW to N at 7 - 11 mph.

MONDAY
Mixing height 3200 to 4200 ft during the morning rising above 5000 ft during the afternoon.  Transport wind NNW to NNE at 8 - 14 mph.  Surface wind light and variable during the morning becoming NNW to NE at 6 - 12 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 ENE to E at 8 - 12 mph.  Surface wind light and variable.

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 and Sunday, October                3 and 4, 2009.
    ==================================================================

For Saturday:

Avoid ignitions within 10 miles to the NW through NNE of SSRAs.  No additional restrictions necessary.

For Sunday:

Avoid ignitions within 10 miles to the NW through NNE of SSRAs.  No additional restrictions necessary.

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