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, September 16, 2010       2:35 PM      Pete Parsons



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



    FRIDAY



Skies will be partly cloudy ahead of the next weather system moving across western Oregon.  A southerly component to the transport winds will help warm temperatures above normal and combine with high mixing heights to provide good ventilation conditions.


     OUTLOOK (SATURDAY-MONDAY)


A very moist southwesterly flow aloft will keep skies generally cloudy with surges of showers and possibly some thunderstorms.  High temperatures will cool to below normal Saturday, as showers roll into the region.  Highs will fall to well below normal Sunday and Monday with the snow level dropping to 8000 feet.



2.  DISPERSION



FRIDAY

Mixing height below 500 ft early rising to 4000 - 5000 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers to 1000 - 2000 ft during the evening.



Transport wind SSE to SSW at 8 - 12 mph throughout the morning and afternoon.  Transport wind shifts to W to NW at 6 - 10 mph during the evening.



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



OUTLOOK:



SATURDAY

Mixing height below 1000 ft early rising to 3800 to 4800 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming SSW to WSW at 4 - 8 mph during the afternoon.  Surface wind light and variable.



SUNDAY

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 SSW to WSW at 6 - 10 mph.  Surface wind light and variable.



MONDAY

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 WSW to WNW at 9 - 15 mph.  Surface wind WSW to WNW at 4 - 8 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, September 17, 2010.

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



Avoid ignitions within 12 miles to the SSE through NW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the SSE through NW in or near drainages leading to SSRAs.  Watch for shifting transport winds.  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

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