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: Thursday, December 2, 2010       2:35 PM      Jim Little



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


    FRIDAY

Upper air charts show a deep and compact low developing about 500 miles offshore on Friday.  This will pump up a weak ridge over the Pacific Northwest giving dry weather but a very stable atmosphere.  Atmospheric ventilation conditions will be generally poor.

    EXTENDED OUTLOOK (SATURDAY - MONDAY)

The upper low moves to about 600 miles west of San Francisco Saturday and winds aloft back to a more southerly direction.  This brings some light rain northward from California and Nevada.  Amounts will be light and confined mainly to southwestern Oregon. Ventilation conditions remain poor and transport winds generally southerly. On Sunday the upper low off the California coast weakens, upper flow continues southerly and ventilation conditions remain poor to marginal.  Expect little change for Monday.



2.  DISPERSION



FRIDAY



Zone 630 and 632:

Mixing height below 1000 ft during the morning.  Afternoon mixing height rising to 1000 - 2000 ft then lowering below 1000 ft during the evening.



Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to ENE to ESE at 6 - 12 mph during the afternoon and evening.



Surface wind light and variable and controlled by local terrain.

Zone 633 - 638:

Mixing height below 1000 ft during the morning.  Afternoon mixing height rising to 1000 - 2000 ft then lowering below 1000 ft during the evening.



Transport wind light and variable and controlled by local terrain during the morning.  Transport wind increases to ENE to ESE at 4 - 8 mph during the afternoon and evening.



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



OUTLOOK:



SATURDAY

In the west mixing height below 1000 ft during the morning rising to 1000 to 1900 ft during the afternoon.  In the east mixing height 1000 to 1800 ft during the morning lowering below 1000 ft during the afternoon.  Transport wind SSW to WSW at 5 - 9 mph during the morning becoming ESE to S at 5 - 9 mph during the afternoon.  Surface wind light and variable.



SUNDAY

Mixing height below 1000 ft during the morning rising to 1000 to 2000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.



MONDAY

Mixing height below 1000 ft during the morning rising to 1000 to 2000 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 Friday, December 3, 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 ENE through SE of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 35 miles to the ENE through S in or near drainages leading to SSRAs.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 2:30pm.



Zone 633 - 638:

Unfavorable burning situation due to very poor smoke dispersion.  Delay ignitions until 10:00am.  Avoid ignitions within 20 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 35 miles in all directions of 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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://omls.oregon.gov/pipermail/smi_northeast/attachments/20101202/f35ff9ac/attachment.html>