SMI South Central (Smoke Management Instructions) South Central Smoke Management Instructions

[ODF Smoke Management Instructions]

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

ISSUED: Friday, November 13, 2009       2:40 PM      Nick Yonker

1.  DISCUSSION AND FORECAST FOR SOUTH CENTRAL OREGON ZONES 624 AND 625

Cold front and upper level low are moving through this afternoon and will give way to a ridge tomorrow.  Air mass will remain quite cool aloft so expect little stabilization until tomorrow evening.  Clouds will dissipate tomorrow, giving way to clearing skies.  Expect mostly fair to good smoke dispersion.

    OUTLOOK (SUNDAY - TUESDAY):

Upper level ridge moves overhead and then to east on Sunday.  Expect mostly sunny skies.  Air mass will continue to stabilize.  Upper level trough in the eastern Pacific will slowly develop and move toward the region through Monday and Tuesday.  Southerly wind flow will increase during the period, so even though the air mass will be fairly stable, smoke dispersion should be at least fair.

2.  DISPERSION

SATURDAY
Mixing height above 5000 ft during the morning and afternoon.  Mixing height lowers below 1000 ft during the evening.

Transport wind WNW to NNW at 6 - 12 mph during the morning.  Transport wind becomes light and variable and controlled by local terrain during the afternoon then increases to S to SW at 5 - 9 mph during the evening.

Surface wind WNW to NNW at 5 - 9 mph during the morning.  Surface wind becomes light and variable and controlled by local terrain during the afternoon and evening.

OUTLOOK:

SUNDAY
Mixing height below 1000 ft early rising to 1300 - 2300 ft by late morning and through the afternoon.  Transport wind SSW to SW at 8 - 14 mph.  Surface wind light and variable during the morning becoming SSE to SSW at 5 - 9 mph during the afternoon.

MONDAY
Mixing height below 1000 ft early rising to 1000 - 2000 ft by late morning and through the afternoon.  Transport wind SE to SSW at 10 - 18 mph.  Surface wind SE to S at 6 - 12 mph.

TUESDAY
Mixing height below 1000 ft early rising to 1000 - 2000 ft by late morning and through the afternoon.  Transport wind SSE to S at 10 - 22 mph.  Surface wind SE to S at 8 - 12 mph.

3.  BURNING INSTRUCTIONS FOR ZONES 624 AND 625 INCLUDING THE WALKER
    RANGE PORTION OF ZONE 624
This instruction is valid for burning conducted on Saturday, November 14, 2009.
==================================================================

Avoid ignitions within 12 miles to the SSW through NNW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles to the S through NNW in or near drainages leading to SSRAs.  Complete ignitions by 3 p.m.

==============================================================
4.  SPECIAL NOTE:

    The smoke management forecaster is available at (503)
    945-7401.  The smoke management forecaster is available
    to discuss specific burns.  The duty forecaster phone
    number is (503) 945-7401. Please call this number and
    not individual's numbers to discuss daily burning. Please
    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_south_central/attachments/20091113/0e01c3a4/attachment.html>