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: Wednesday, September 15, 2010       2:35 PM      Pete Parsons



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



    THURSDAY



A weakening cold front will give way to a transitory upper-level ridge of high pressure with a warm west-southwesterly flow aloft.  A few morning showers north will taper off in the afternoon.  Skies should stay mostly cloudy, but temperatures will remain near normal.


     OUTLOOK (FRIDAY-SUNDAY)


Southwesterly flow aloft will increase Friday with another cold front forecast to move onshore in the afternoon. Showers are possible Friday night with showers likely Saturday.  A few showers could linger into Sunday, as upper-level trough moves onshore.  Temperatures will cool to below normal over the weekend.



2.  DISPERSION



THURSDAY



Zone 630 and 632:

Mixing height below 500 ft early rising to 3500 - 4500 ft by late morning.  Afternoon mixing height rises above 5000 ft then lowers below 1000 ft during the evening.



Transport wind SSE to SW at 6 - 12 mph during the morning and afternoon.  Transport wind becomes light and variable and controlled by local terrain during the evening.



Surface wind light and variable and controlled by local terrain.



Zone 633 - 638:

Mixing height below 500 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 SSW to WSW at 4 - 8 mph during the morning and afternoon.  Transport wind becomes light and variable and controlled by local terrain during the evening.



Surface wind light and variable and controlled by local terrain.



OUTLOOK:



FRIDAY

Mixing height below 1000 ft early rising to 3700 to 4700 ft by late morning rising above 5000 ft during the afternoon.  Transport wind ESE to SSE at 4 - 8 mph during the morning becoming light and variable during the afternoon.  Surface wind light and variable.



SATURDAY

Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SSE to SW at 4 - 8 mph.  Surface wind light and variable.



SUNDAY

Mixing height below 1000 ft early rising to 3000 to 4000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SSW to WSW at 6 - 10 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 Thursday, September 16, 2010.

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



Zone 630 and 632:

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.  Complete ignitions by 4 p.m.



Zone 633 - 638:

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.  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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