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: Tuesday, June 22, 2010       2:35 PM      Jim Little

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

    WEDNESDAY

An upper level trough deepens and moves toward the Pacific Northwest on Wednesday.  The trough axis remains offshore for southwesterly flow aloft.  Moisture will be limited but there is a possibility of showers or thunderstorms during the afternoon.  It should be warm enough to push afternoon mixing heights to above 5000 feet for good smoke dispersal conditions.

    OUTLOOK (THURSDAY-SATURDAY)

Thursday sees a westerly flow aloft with embedded disturbances moving with the flow.  Again, very limited moisture so rain is not expected.  Mixing heights should push high enough for good smoke dispersal conditions.  A broad trough aloft sets up for Friday.  Look for dry weather, partly cloudy skies, and good smoke dispersal conditions.  Saturday it's back to a  westerly pattern aloft with weak embedded disturbances but not much moisture.  High afternoon mixing heights will again be the rule on Saturday.


2.  DISPERSION

WEDNESDAY

Zone 630 and 632:
Mixing height above 5000 ft throughout the day.  Mixing height lowers to 2000 - 3000 ft during the evening.

Transport wind SSW to SW at 9 - 15 mph during the morning.  Transport wind becomes light and variable and controlled by local terrain during the afternoon then increases to E to SSE at 5 - 9 mph during the evening.

Surface wind E to SE at 5 - 9 mph during the morning.  Surface wind shifts to S to SW and increases to 10 - 16 mph during the afternoon and evening.

Zone 633 - 638:
Mixing height 3800 - 4800 ft during the morning.  Mixing height rises above 5000 ft during the afternoon and evening.

Transport wind SSW to SW at 8 - 14 mph during the morning.  Transport wind shifts to W to NW at 6 - 10 mph during the afternoon then becomes light and variable and controlled by local terrain during the evening.

Surface wind NE to ENE at 8 - 14 mph during the morning.  Surface wind becomes light and variable and controlled by local terrain during the afternoon then increases to SSE to SSW at 6 - 10 mph during the evening.

OUTLOOK:

THURSDAY
Mixing height below 1000 ft early rising to 3400 to 4400 ft by late morning rising above 5000 ft during the afternoon.  Transport wind SE to SSW at 7 - 13 mph during the morning becoming light and variable during the afternoon.  Surface wind SSW to WSW at 7 - 11 mph.

FRIDAY
Mixing height 2800 to 3800 ft during the morning rising above 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.

SATURDAY
Mixing height 2800 to 3800 ft during the morning rising above 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 Wednesday, June 23, 2010.
    ==================================================================

Zone 630 and 632:
Avoid ignitions within 10 miles to the E through WSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles in all directions of SSRAs.

Zone 633 - 638:
Avoid ignitions within 10 miles in all directions of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 15 miles in all directions of 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


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