SMI West (Smoke Management Instructions) Western Oregon Smoke Management Instructions

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Friday, November 12, 2010       8:00 AM      Pete Parsons



1.  DISCUSSION AND FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623



TODAY



A flat upper-level ridge, in the eastern Gulf of Alaska, will bring a drying and cool northwesterly flow aloft to the region.  Residual low-level moisture will combine with a stabilizing air mass to produce areas of dense valley fog this morning, mainly from Lane County north.  Transport winds will be variable across the north and light northerly across the southern zones.  That will likely create an opportunity to take care of some southern units requiring northerly winds.  Temperatures aloft will remain cool enough for fair afternoon mixing, but look for evening mixing heights to drop quickly.



2.  DISPERSION



Zone 601-612 (North Coast Range and Cascades):



MORNING

Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning.

Transport wind light and variable and controlled by local terrain.

Surface wind light and variable and controlled by local terrain.



AFTERNOON

Mixing height 2500 - 3500 ft.

Transport wind similar to morning.

Surface wind similar to morning.



EVENING

Mixing height lowers below 1000 ft.

Transport wind similar to afternoon.

Surface wind similar to afternoon.



Zone 615-620 (South Coast Range):



MORNING

Mixing height below 1000 ft early rising to 1500 - 2500 ft by late morning.

Transport wind NE to E at 4 - 8 mph.

Surface wind light and variable but favors N to NE and controlled by local terrain.



AFTERNOON

Mixing height rising to 2700 - 3700 ft.

Transport wind N to NE at 8 - 12 mph.

Surface wind increases to NNW to NE at 6 - 10 mph.



EVENING

Mixing height 1000 - 1500 ft.

Transport wind N to NE at 4 - 8 mph.

Surface wind similar to afternoon.



Zone 616-623 (South Cascades):



MORNING

Mixing height below 1000 ft early rising to 2000 - 3000 ft by late morning.

Transport wind light and variable but favors N and controlled by local terrain.

Surface wind light and variable but favors N and controlled by local terrain.



AFTERNOON

Mixing height 2500 - 3500 ft.

Transport wind increases to NNW to NNE at 6 - 12 mph.

Surface wind increases to NNW to NNE at 4 - 8 mph.



EVENING

Mixing height lowers below 1000 ft.

Transport wind N to NE at 4 - 8 mph.

Surface wind becomes light and variable but favors N and controlled by local terrain.



3.  BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA

These instructions are valid for burning conducted on Friday, November 12, 2010.

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



***Complete ignitions by 2:30 p.m. for all zones***



Coast Range



Zone 601 and 612

Units should be 750 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.



Zone 602 and 603

No burning allowed.



Zone 615, 616 west of R8W, 618, 619, and 620

Use standard guidance matrix. (See section 5 below.)  Avoid burning directly upwind of the North Bend/Coos Bay SSRA.



Zone 616 east of R9W

Units should be 1000 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.





Cascades



Zone 605 and 606

Units should be 500 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.



Zone 607, 608, 609, 617, and 623

Use standard guidance matrix. (See section 5 below.)  Ensure adequate distance from downwind SSRAs for smoke to dissipate.  South of T30S in Zone 617 units should be 500 tons or less, spaced 10 miles apart.



Zone 610, 611, and 616

Units should be 1000 tons or less, spaced 10 miles apart, and 12 miles from downwind SSRAs.  South of T30S in Zone 616 units should be 500 tons or less, spaced 10 miles apart.



Zone 620 and 622

No burning allowed.





Siskiyous

Use standard guidance matrix. (See section 5 below.)



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

4.  SPECIAL NOTE:



    Call the smoke management duty forecaster at (503) 945-7401 to

    discuss burning.  Please do not call individual's numbers to

    discuss daily burning.  If the forecaster is not available,

    leave a message and he will return your call as soon as possible.

    Avoid calling between 2 to 2:30 p.m.



    The 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





5.  STANDARD GUIDANCE MATRIX:



  * Greater than 5000 ft mixing height:  No burning within 5 miles of

    downwind SSRA.  Maximum 100 tons per mile from downwind SSRA.

    Example:  500 ton maximum allowed if burned 5 miles from downwind SSRA.



  * 3000 - 5000 ft mixing height:  No burning within 10 miles of

    downwind SSRA.  Maximum 75 tons per mile from downwind SSRA.

    Example:  750 ton maximum allowed if burned 10 miles from downwind SSRA.



  * Less than 3000 ft mixing height:  No burning within 15 miles of

    downwind SSRA.  Maximum 50 tons per mile from downwind SSRA.

    Example:  750 ton maximum allowed if burned 15 miles from downwind SSRA.



  * All exceptions must be coordinated with the duty forecaster

    prior to ignition.

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