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: Monday, October 5, 2009       7:30 AM      Jim Little

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

A strong upper level ridge of high pressure over the northeast Pacific Ocean will expand eastward into the Pacific Northwest today with north to northeast flow aloft over the area.  A system riding over the strong high will move onshore well to the north Tuesday and Tuesday night, turning the low level flow in the region back to onffshore.

2.  DISPERSION

Zone 601, 602, 603 and 612 (North Coast Range):

MORNING
Mixing height 1200 - 2200 ft.
Transport wind light and variable and controlled by local terrain.
Surface wind light and variable and controlled by local terrain.

AFTERNOON
Mixing height rising above 5000 ft.
Transport wind increases to NNW to NNE at 6 - 10 mph.
Surface wind increases to NNW to NNE at 5 - 9 mph.

EVENING
Mixing height lowers below 1000 ft.
Transport wind NNE to ENE at 6 - 12 mph.
Surface wind becomes light and variable and controlled by local terrain.

Zone 605-611 (North Cascades):

MORNING
Mixing height 3800 - 4800 ft.
Transport wind light and variable and controlled by local terrain.
Surface wind light and variable and controlled by local terrain.

AFTERNOON
Mixing height above 5000 ft.
Transport wind increases to N to NE at 8 - 12 mph.
Surface wind increases to N to NE at 8 - 12 mph.

EVENING
Mixing height 1100 - 2100 ft.
Transport wind shifts to ENE to ESE at 6 - 10 mph.
Surface wind shifts to ENE to ESE at 4 - 8 mph.

Zone 615-620 (South Coast Range):

MORNING
Mixing height 2100 - 3100 ft.
Transport wind N to NE at 4 - 8 mph.
Surface wind N to NE at 4 - 8 mph.

AFTERNOON
Mixing height rising above 5000 ft.
Transport wind increases to NNW to N at 10 - 16 mph.
Surface wind increases to NNW to NNE at 9 - 15 mph.

EVENING
Mixing height 1200 - 2200 ft.
Transport wind decreases to NW to NNE at 4 - 8 mph.
Surface wind becomes light and variable and controlled by local terrain.

Zone 616-623 (South Cascades):

MORNING
Mixing height above 5000 ft.
Transport wind N to NE at 6 - 12 mph.
Surface wind N to NE at 8 - 12 mph.

AFTERNOON
Mixing height above 5000 ft.
Transport wind NNW to NNE at 9 - 15 mph.
Surface wind NNW to NNE at 8 - 14 mph.

EVENING
Mixing height 1900 - 2900 ft.
Transport wind NE to ENE at 8 - 12 mph.
Surface wind NNE to ENE at 4 - 8 mph.

3.  BURNING INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA
These instructions are valid for burning conducted on Monday, October 5, 2009.
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Coast Range

All Zones
Use standard guidance matrix. (See section 5 below.)  Ensure adequate distance from downwind SSRAs for smoke to dissipate.


Cascades

Zone 605, 606, and 616
Units should be 1000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.  Verify transport winds away from SSRA if burning within 10 miles of the SSRA in Zone 605 and 606.  Higher tonnage is possible south of T20S in Zone 606.  Call the forecaster.  South of T30S in Zone 616 units should be 500 tons or less, spaced 5 miles apart.

Zone 607, 608, and 617
Units should be 2000 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.  South of T30S in Zone 617 units should be 750 tons or less, spaced 5 miles apart.

Zone 609, 610, and 611
Use standard guidance matrix. (See section 5 below.)  Ensure adequate distance from downwind SSRAs for smoke to dissipate.

Zone 620 and 622
Units should be 500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.

Zone 623
Units should be 1500 tons or less, spaced 5 miles apart, and 10 miles from downwind SSRAs.  South of T36S, use standard guidance matrix. (See section 5 below.)


Siskiyous
Use standard guidance matrix. (See section 5 below.)  Ensure adequate distance from downwind SSRAs for smoke to dissipate.

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