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: Saturday, May 2, 2009       2:40 PM      Nick Yonker

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

First front went through early this morning.  Another front will move in from the southwest later tonight to early Sunday carried along by a strong SW'erly jet stream.  Expect more rainfall during the morning before dissipating during the afternoon.  Mixing and smoke dispersion will remain good.

    OUTLOOK (MONDAY - WEDNESDAY):

Upper level trough will remain in the eastern Pacific continuing to pump in more fronts.  Next front arrives Monday afternoon to evening and promises to bring plenty of rain and wind.  Tuesday will see a lull in the activity, and then another front will move in late Tuesday to early Wednesday.  Expect continued good mixing and smoke dispersion through the period.

2.  DISPERSION

SUNDAY
Mixing height below 3000 ft early rising above 5000 ft by late morning.  Mixing height lowers to 3000 - 4000 ft during the evening.

Transport wind SW to W at 9 - 15 mph.

Surface wind SSW to WSW at 8 - 12 mph.

OUTLOOK:

MONDAY
Mixing height below 1000 ft early rising to 4400 - 5000 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SSE to SSW at 10 - 16 mph during the morning becoming S to SSW at 18 - 32 mph during the afternoon.  Surface wind ESE to S at 6 - 12 mph during the morning becoming S to SSW at 10 - 22 mph during the afternoon.

TUESDAY
Mixing height 4500 - 5000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SW to W at 18 - 32 mph during the morning becoming WSW to W at 15 - 25 mph during the afternoon.  Surface wind SW to W at 10 - 20 mph.

WEDNESDAY
Mixing height 2800 - 3800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SW to W at 18 - 32 mph during the morning becoming WSW to W at 22 - 38 mph during the afternoon.  Surface wind SW to WSW at 10 - 20 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 Sunday, May 3, 2009.
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Avoid ignitions within 10 miles to the SW through WNW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SE through WNW in or near drainages leading to SSRAs.

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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


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