SMI Northeast (Smoke Management Instructions) (no subject)

ODF Smoke Management Instructions smi_northeast at listsmart.osl.state.or.us
Sun Nov 7 14:31:16 PST 2010


SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Sunday, November 7, 2010       2:35 PM      Jim Little



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


    MONDAY
Upper troughiness over the Pacific Northwest will be moving east during the day and a broad, flat ridge will be approaching from the west.  This will slowly stabilize the atmosphere but scattered showers will likely persist into the afternoon.  Expect fair to good smoke dispersal conditions most areas.
    EXTENDED OUTLOOK (TUESDAY - THURSDAY)
*** Slowly Deteriorating Smoke Dispersal Conditions after Tuesday ***
An upper low moves rapidly across the eastern Pacific during the day on Tuesday.  A surface cold front associated with this low will bring rain back to the region.  Rain will reach the region by evening but amounts will be light.  The front and upper low move rapidly through the region and by Wednesday a strong ridge pops up to the west.  Subsidence with this ridge will depress maximum mixing heights.  Smoke dispersal conditions drop to marginal.  The upper ridge moves eastward across the region on Thursday further stabilizing the atmosphere.  Expect smoke dispersal conditions to be generally poor.




2.  DISPERSION



MONDAY



Zone 630 and 632:

Mixing height 2600 - 3600 ft during the morning.  Afternoon mixing height rises to 3900 - 4900 ft then lowers to 1800 - 2800 ft during the evening.



Transport wind WNW to NW at 8 - 12 mph.



Surface wind W to NW at 6 - 12 mph throughout the day.



Zone 633 - 638:

Mixing height 1600 - 2600 ft during the morning.  Afternoon mixing height rises to 3900 - 4900 ft then lowers to 1700 - 2700 ft during the evening.



Transport wind W to NW at 9 - 15 mph throughout the day.



Surface wind W to NW at 8 - 14 mph.



OUTLOOK:



TUESDAY

In the west mixing height below 1000 ft early rising to 2700 to 3700 ft by late morning rising to 3600 to 4600 ft during the afternoon.  In the east mixing height 1800 to 2800 ft during the morning rising to 3600 to 4600 ft during the afternoon.  In the west transport wind S to SW at 16 - 26 mph.  In the east transport wind S to SSW at 9 - 15 mph.  Surface wind SSE to SSW at 8 - 14 mph.



WEDNESDAY

Mixing height below 1000 ft early rising to 1500 to 2500 ft by late morning and through the afternoon.  Transport wind light and variable during the morning becoming SSW to WSW at 6 - 10 mph during the afternoon.  Surface wind light and variable.



THURSDAY

Mixing height 2500 to 3500 ft during the morning lowering 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 Monday, November 8, 2010.

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



Zone 630 and 632:

Avoid ignitions within 12 miles to the W through NW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the S through NW in or near drainages leading to SSRAs.



Zone 633 - 638:

Avoid ignitions within 12 miles to the WSW through NW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the S through NW in or near drainages leading to SSRAs.



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

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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