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: Saturday, November 7, 2009       2:35 PM      Nick Yonker

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

Strong WSW'erly jet stream will remain over the region through tomorrow with ridge not building in as much as earlier expected.  Expect variable clouds with a chance of scattered showers.  Air mass will only stabilize a little overnight and become unstable during the afternoon.  Wind flow will be light to moderate and lead to fairly good smoke dispersion.

    OUTLOOK (MONDAY - WEDNESDAY):

Next cold front approaches the state Monday with clouds increasing through the afternoon and moisture beginning during the evening.  Air mass will stabilize some ahead of the front but cooler air moving in with and behind the front will lift mixing levels by early Tuesday.  Showers diminish Tuesday.  Next front will move in on Wednesday.  Overall, expect mostly good to excellent 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 2000 - 3000 ft during the evening.

Transport wind S to SW at 10 - 20 mph during the morning.  Transport decreases to SSW to WSW at 8 - 14 mph during the afternoon then shifts to SSE to SSW and decreases to 5 - 9 mph during the evening.

Surface wind S to SW at 9 - 15 mph during the morning.  Surface wind decreases to SSW to WSW at 5 - 9 mph during the afternoon then becomes light and variable and controlled by local terrain during the evening.

OUTLOOK:

MONDAY
Mixing height below 1000 ft early rising to 3200 to 4200 ft by late morning rising to 4000 to 5000 ft during the afternoon.  Transport wind SSE to S at 12 - 24 mph during the morning becoming S to SSW at 18 - 32 mph during the afternoon.  Surface wind SE to S at 8 - 14 mph.

TUESDAY
Mixing height 3500 to 5000 ft throughout the day.  Transport wind SSE to SSW at 8 - 12 mph.  Surface wind SE to SSW at 4 - 8 mph.

WEDNESDAY
Mixing height 3200 to 4200 ft during the morning rising to 4500 to 5000 ft during the afternoon.  Transport wind SW to WSW at 15 - 25 mph during the morning becoming SSW to SW at 18 - 32 mph during the afternoon.  Surface wind SW to W at 10 - 18 mph.

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 Sunday, November 8, 2009.
    ==================================================================

Avoid ignitions within 10 miles to the SSE through WSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles to the SSE through WSW in or near drainages leading to SSRAs.

    =========================================================
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/20091107/ba277ca8/attachment.html>