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, November 14, 2009       2:40 PM      Nick Yonker

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

Upper level ridge has built over the region bringing a dry and mostly sunny day.  A warm front will ride over the top of the ridge and bring some increasing clouds tonight and Sunday.  Expect another fair day with variable clouds tomorrow under the stable ridge pattern.  Smoke dispersion will be poor to fair.

    OUTLOOK (MONDAY - WEDNESDAY):

Upper ridge slides to the east on Monday but trough and next cold front will remain offshore for another day before moving in later Tuesday.  Wind flow will get quite brisk on Monday and Tuesday prior to the front moving in.  This will mix out the air mass and make for good to excellent smoke dispersion.  Upper level trough moves through on Wednesday.

2.  DISPERSION

SUNDAY
Mixing height below 1000 ft early rising to 1000 - 2000 ft by late morning.  Afternoon mixing height rises to 1700 - 2700 ft then lowers to 1000 - 1700 ft during the evening.

Transport wind S to SW at 9 - 15 mph.

Surface wind S to SW at 4 - 8 mph.

OUTLOOK:

MONDAY
Mixing height 1700 - 2700 ft during the morning rising above 5000 ft during the afternoon.  Transport wind SSW to SW at 18 - 30 mph during the morning becoming SSW to SW at 25 - 45 mph during the afternoon.  Surface wind S to SW at 9 - 15 mph.

TUESDAY
Mixing height 2800 - 3800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind S to SSW at 20 - 35 mph.  Surface wind SSE to S at 12 - 22 mph.

WEDNESDAY
Mixing height 4500 - 5000 ft during the morning rising above 5000 ft during the afternoon.  Transport wind W to NW at 10 - 20 mph during the morning becoming SW to W at 9 - 15 mph during the afternoon.  Surface wind WSW to NW at 6 - 10 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, November 15, 2009.
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Delay ignitions until 10 a.m.  Avoid ignitions within 15 miles to the S through WSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 25 miles to the S through WSW in or near drainages leading to SSRAs.  Complete ignitions by 3 p.m.

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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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