SMI Northeast (Smoke Management Instructions) (no subject)

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Tuesday, November 30, 2010       2:35 PM      Jim Little



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


    WEDNESDAY
The cold front that brought rain and snow to much of the region Tuesday and Tuesday night is south and east of the area for Wednesday.  What remains of the weakening system are now in Idaho, northern Nevada, and northern California.  Scattered showers remain, but the air mass will rapidly stabilize and smoke dispersal conditions will be in the marginal range.  Transport winds will be light and generally west or southwesterly.

    EXTENDED OUTLOOK (THURSDAY - SATURDAY)

An upper short wave re-energizes the front to the south on Thursday pushing precipitation back into the region.  Southern sections will see greater amounts, but northern areas will see renewed precipitation as well.  A drier pattern sets up for the Friday and the weekend and maximum mixing heights will be held down for likely marginal to perhaps poor smoke dispersal conditions later in the extended period.

2.  DISPERSION



WEDNESDAY



Zone 630 and 632:

Mixing height 1000 - 2000 ft during the morning.  Afternoon and evening mixing rises to 2000 - 3000 ft.



Transport wind S to SW at 9 - 15 mph during the morning.  Transport wind increases to SSW to SW at 10 - 22 mph during the afternoon and evening.



Surface wind SSE to SSW at 5 - 9 mph throughout the day.



Zone 633 - 638:

Mixing height 1000 - 1600 ft during the morning.  Afternoon mixing height rises to 2100 - 3100 ft then lowers to 1300 - 2300 ft during the evening.



Transport wind S to SW at 6 - 12 mph throughout the day.



Surface wind S to SW at 4 - 8 mph.



OUTLOOK:



THURSDAY

Mixing height below 1000 ft during the morning rising to 1500 to 2500 ft during the afternoon.  Transport wind SSW to WSW at 4 - 8 mph during the morning becoming light and variable during the afternoon.  Surface wind light and variable.



FRIDAY

Mixing height below 1000 ft during the morning rising to 3000 to 4000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.



SATURDAY

Mixing height below 1000 ft during the morning rising to 2000 to 3000 ft during the afternoon.  Transport wind light and variable.  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 Wednesday, December 1, 2010.

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



Zone 630 and 632:

Delay ignitions until 10:00am.  Avoid ignitions within 15 miles to the S through SW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles to the S through W in or near drainages leading to SSRAs.  Recommend against burning units that will smolder significantly overnight.



Zone 633 - 638:

Unfavorable burning situation due to very poor smoke dispersion.  Delay ignitions until 10:00am.  Avoid ignitions within 20 miles to the SE through SW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 35 miles to the SE through SW in or near drainages leading to SSRAs.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 2:30pm.



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

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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