SMI Northeast (Smoke Management Instructions) (no subject)

Tue Oct 12 14:40:52 PDT 2010

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY

ISSUED: Tuesday, October 12, 2010       2:35 PM      Jim Little

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

    WEDNESDAY
High pressure aloft continues over the Pacific Northwest on Wednesday, but it is moving slowly eastward.  The axis of the high pressure ridge extends from Nevada to Alberta by mid morning, and by early evening has moved to the northern Rockies.  Expect light winds, generally from the south, and low mixing heights for generally poor smoke dispersal conditions.
    EXTENDED OUTLOOK (THURSDAY - SATURDAY)
The upper level ridge will be well to the east by Thursday with southwest flow aloft setting up over the Pacific Northwest.  Cooling aloft will allow for higher maximum mixing heights and improved ventilation conditions.  By Friday models show minor ridging aloft.  Expect fair weather and generally fair smoke dispersal conditions.  Saturday will see southwesterly flow aloft, southerly transport winds and fair to good smoke dispersal conditions.

2.  DISPERSION

WEDNESDAY

Zone 630 and 632:

Transport wind SSE to SSW at 15 - 25 mph during the morning.  Transport wind decreases to S to SW at 10 - 20 mph during the afternoon then increases to SSE to SSW at 14 - 28 mph during the evening.

Surface wind SSE to SSW at 10 - 16 mph throughout the day.

Zone 633 - 638:

Transport wind SE to S at 10 - 16 mph throughout the day.

Surface wind SE to S at 9 - 15 mph.

OUTLOOK:

THURSDAY

Mixing height 1600 to 2600 ft during the morning rising to 2900 to 3900 ft during the afternoon.  Transport wind SSE to SSW at 10 - 20 mph during the morning becoming SW to WSW at 12 - 22 mph during the afternoon.  Surface wind SSE to SSW at 6 - 12 mph during the morning becoming SSW to WSW at 8 - 14 mph during the afternoon.

FRIDAY

Mixing height below 1000 ft early rising to 1300 to 2300 ft by late morning rising to 3500 to 4500 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

SATURDAY

Mixing height below 1000 ft early rising to 1100 to 2100 ft by late morning rising to 4300 to 5000 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 Wednesday, October 13, 2010.

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

Zone 630 and 632:

Avoid ignitions within 15 miles to the SSE through SW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles to the SSE through SW in or near drainages leading to SSRAs.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 3:30pm.

Zone 633 - 638:

Avoid ignitions within 15 miles to the SE through SSW of SSRAs.  Complete ignitions by 3:30pm.

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

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/20101012/4cc2c4a2/attachment.html>