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: Wednesday, November 3, 2010       2:35 PM      Jim Little



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


    THURSDAY
*** Marginal Smoke Dispersal Conditions Continue ***
Thursday's upper air pattern will be very similar to Wednesday's - just shifted slightly eastward.  Upper flow over the region will be from the southwest.  Low level flow will be generally south to southeasterly with suppressed mixing heights for unfavorable ventilation conditions.  Transport winds will be generally south or southeasterly.
    EXTENDED OUTLOOK (FRIDAY - SUNDAY)
On Friday an upper level trough approaches from the west.  Associated cooler air aloft should allow for higher maximum mixing heights for improved ventilation conditions.  Transport winds will be generally southerly.  The upper trough moves through early Saturday and there will be some stabilization during the afternoon.  However another relatively weak front will brings more rain during the evening.  Expect a few left-over showers Sunday, good smoke dispersal conditions and transport winds mostly from the southwest.



2.  DISPERSION



THURSDAY



Zone 630 and 632:

Mixing height below 500 ft early rising to 1300 - 2300 ft by late morning.  Afternoon and evening mixing height similar to late morning.



Transport wind SSE to SSW at 10 - 16 mph during the morning and afternoon.  Transport wind increases to SSE to SSW at 16 - 30 mph during the evening.



Surface wind SSE to SSW at 6 - 10 mph throughout the day.



Zone 633 - 638:

Mixing height below 1000 ft during the morning.  Afternoon mixing height rising to 1500 - 2500 ft then lowering to 1000 - 1900 ft during the evening.



Transport wind SE to SSW at 6 - 10 mph during the morning and afternoon.  Transport wind increases to SE to S at 12 - 22 mph during the evening.



Surface wind SE to S at 5 - 9 mph.



OUTLOOK:



FRIDAY

Mixing height 3100 to 4100 ft throughout the day.  In the west transport wind SSW to SW at 18 - 32 mph during the morning becoming SW to WSW at 10 - 16 mph during the afternoon.  In the east transport wind SSE to SSW at 12 - 24 mph during the morning becoming SW to WSW at 10 - 22 mph during the afternoon.  Surface wind SSE to SSW at 8 - 14 mph during the morning becoming SSW to W at 6 - 10 mph during the afternoon.



SATURDAY

Mixing height below 1000 ft early rising to 2100 to 3100 ft by late morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.



SUNDAY

Mixing height 1800 to 2800 ft during the morning rising to 3000 to 4000 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 Thursday, November 4, 2010.

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



Zone 630 and 632:

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



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 SSW of SSRAs.  Complete ignitions by 3:00pm.



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

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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://omls.oregon.gov/pipermail/smi_northeast/attachments/20101103/f2a75589/attachment.html>