SMI West (Smoke Management Instructions) (no subject)

Mon Dec 13 11:03:53 PST 2010

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY

ISSUED: Monday, December 13, 2010       7:30 AM      Jim Little

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

Weather today looks to be fairly quiet compared to the past few days.  Western Oregon will be between weather systems with the next cold front developing out along 145 degrees west or about 600 miles west of the coastline.  This system will move in tonight for another round of rain and some gusty winds, with lowering snow levels in the mountains.  Transport winds will be generally southwesterly and mixing heights should be allow for mostly fair smoke dispersal conditions.

2.  DISPERSION

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

MORNING

Mixing height 2000 - 3000 ft.

Transport wind SW to WSW at 12 - 22 mph.

Surface wind SSW to WSW at 6 - 10 mph.

AFTERNOON

Mixing height 2200 - 3200 ft.

Transport wind S to SW at 10 - 20 mph.

Surface wind SSE to SW at 6 - 10 mph.

EVENING

Mixing height 2400 - 3400 ft.

Transport wind SSW to SW at 13 - 25 mph.

Surface wind S to SW at 6 - 12 mph.

Zone 605-611 (North Cascades):

MORNING

Mixing height 1500 - 2500 ft.

Transport wind SSW to WSW at 8 - 12 mph.

Surface wind SSW to WSW at 6 - 12 mph.

AFTERNOON

Mixing height 2000 - 3000 ft.

Transport wind S to SW at 8 - 12 mph.

Surface wind S to SW at 6 - 12 mph.

EVENING

Mixing height 2400 - 3400 ft.

Transport wind similar to afternoon.

Surface wind similar to afternoon.

Zone 615-620 (South Coast Range):

MORNING

Mixing height 2600 - 3600 ft.

Transport wind SSW to SW at 9 - 15 mph.

Surface wind S to SW at 6 - 12 mph.

AFTERNOON

Mixing height lowers to 1900 - 2900 ft.

Transport wind S to SW at 10 - 20 mph.

Surface wind similar to morning.

EVENING

Mixing height rising to 3800 - 4800 ft.

Transport wind SSW to SW at 12 - 24 mph.

Surface wind SSW to SW at 10 - 18 mph.

Zone 616-623 (South Cascades):

MORNING

Mixing height 1800 - 2800 ft.

Transport wind S to SW at 6 - 10 mph.

Surface wind S to SW at 5 - 9 mph.

AFTERNOON

Mixing height 1900 - 2900 ft.

Transport wind S to SW at 8 - 14 mph.

Surface wind similar to morning.

EVENING

Mixing height 2400 - 3400 ft.

Transport wind SSW to SW at 10 - 20 mph.

Surface wind SSW to SW at 9 - 15 mph.

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

These instructions are valid for burning conducted on Monday, December 13, 2010.

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

Coast Range

Zone 601 and 612

Units should be 1000 tons or less, spaced 15 miles apart, and 15 miles from downwind SSRAs.  North of Tillamook in Zone 601, use standard guidance matrix. (See section 5 below.)

Zone 602 and 603

No burning allowed.  North of T3N in Zone 602, use standard guidance matrix. (See section 5 below.)  Units may be 750 tons or less, spaced 15 miles apart, south of the Siuslaw River in Zone 603.

Zone 615 and 616 west of R8W

Units should be 1500 tons or less, spaced 15 miles apart, and 15 miles from downwind SSRAs.  Higher tonnage is possible south of T29S in Zone 616.  Call the forecaster.

Zone 616 east of R9W

Units should be 750 tons or less, spaced 15 miles apart, and 15 miles from downwind SSRAs.  Higher tonnage is possible south of T29S.  Call the forecaster.

Zone 618, 619, and 620

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

Cascades

All zones except zone 611

Use standard guidance matrix. (See section 5 below.)  Ensure adequate distance from downwind SSRAs for smoke to dissipate.  Verify transport winds away from SSRA if burning within 10 miles of the SSRA in Zone 605 and 606.  Avoid ignitions north of T24S in Zone 616.

Zone 611

Units should be 750 tons or less, spaced 15 miles apart, and 15 miles from downwind SSRAs.

Siskiyous

Units should be 750 tons or less, spaced 15 miles apart, and 15 miles from downwind SSRAs.

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

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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