SMI Northeast (Smoke Management Instructions) Northeast Oregon Smoke Management Instructions

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS
SALEM FORESTRY WEATHER CENTER
OREGON DEPARTMENT OF FORESTRY

ISSUED: Sunday, October 25, 2009       2:35 PM      Jim Little

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

An upper level trough moves across the region Monday and Monday night.  Rain spreads across the region west to east as a Pacific front crosses the Cascades.   By Tuesday morning several inches of snow are possible above about 4000 feet with lighter amounts below.  Smoke dispersal conditions should be good.

    OUTLOOK (TUESDAY-THURSDAY)

An upper level ridge builds in the eastern Pacific.  Post frontal showers continue on Tuesday.  By Wednesday just widely scattered are likely. On Friday a surface high settles over the area for light winds but stability remains favorable for good smoke dispersal conditions throughout the region.

2.  DISPERSION

MONDAY

Zone 630 and 632:
Mixing height 3300 - 4300 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 2400 - 3400 ft during the evening.

Transport wind SW to WSW at 15 - 29 mph during the morning.  Transport wind shifts to WNW to NNW at 18 - 32 mph during the afternoon then decreases to W to NW at 15 - 25 mph during the evening.

Surface wind SW to WSW at 10 - 22 mph during the morning.  Surface wind shifts to WNW to NNW at 10 - 16 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height 2200 - 3200 ft during the morning.  Mixing height rises to above 5000 ft during the afternoon then lowers to 1900 - 2900 ft during the evening.

Transport wind SSW to SW at 12 - 22 mph during the morning.  Transport wind shifts to WNW to NW at 12 - 22 mph during the afternoon and evening.

Surface wind SSW to SW at 9 - 15 mph during the morning.  Surface wind shifts to WNW to NW at 8 - 14 mph during the afternoon and evening.

OUTLOOK:

TUESDAY
Mixing height 3100 to 4100 ft during the morning rising to 4000 to 5000 ft during the afternoon.  Transport wind WNW to NW at 17 - 31 mph.  Surface wind WNW to NW at 11 - 21 mph.

WEDNESDAY
Mixing height 2500 to 3500 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

THURSDAY
Mixing height below 1000 ft early rising to 1500 to 2500 ft by late morning rising to 4500 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 Monday, October 26, 2009.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 12 miles to the SW through NW of SSRAs.  Care needed in selecting units as smoke will likely fumigate along the ground in wind prone areas.  Watch for shifting transport winds.  No additional restrictions necessary.

Zone 633 - 638:
Avoid ignitions within 12 miles to the SSW through NW of SSRAs.  Watch for shifting transport winds.  No additional restrictions necessary.

    =========================================================
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/20091025/0b37b7d9/attachment.html>