SMI Northeast (Smoke Management Instructions) (no subject)

[ODF Smoke Management Instructions]

SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY



ISSUED: Tuesday, October 5, 2010       2:35 PM      Jim Little



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


    WEDNESDAY
A nearly stationary upper level low remains over southern California while the main Pacific jet stream is to the north, cutting into central British Columbia on Wednesday.  Weather will be dry with temperatures running 8-12 degrees above average for the first week in October.  High pressure means light and variable transport winds which will affect smoke ventilation.
    EXTENDED OUTLOOK (THURSDAY - SATURDAY)
On Thursday the upper low over California kicks out to the northeast and weakens.  The center of the low will be over about Salmon, Idaho by evening.  Expect widespread showers as the low moves out.  Temperatures fall to around 3-5 degrees below average and the lack of surface heating holds mixing heights down.  Upper level flow goes westerly by Friday with a weak weather system moving into Washington early in the day. Moisture will stay well to the northeast so expect dry weather and improving ventilation conditions with warmer daytime temperatures again.  Saturday the mixing heights lower again as warm air streaming in at higher elevations stabilizes the atmosphere.


2.  DISPERSION



WEDNESDAY



Zone 630 and 632:

Mixing height 2900 - 3900 ft during the morning.  Afternoon mixing height rises to 3600 - 4600 ft then lowers to 1000 - 1700 ft during the evening.



Transport wind E to SE at 5 - 9 mph during the morning.  Transport wind becomes light and variable and controlled by local terrain during the afternoon then increases to SE to SSW at 6 - 10 mph during the evening.



Surface wind ENE to ESE at 4 - 8 mph during the morning.  Surface wind becomes light and variable and controlled by local terrain during the afternoon and evening.



Zone 633 - 638:

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



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



Surface wind ESE to SSE at 4 - 8 mph during the morning.  Surface wind becomes light and variable and controlled by local terrain during the afternoon and evening.



OUTLOOK:



THURSDAY

Mixing height below 1000 ft early rising to 1000 to 2000 ft by late morning rising to 2700 to 3700 ft during the afternoon.  Transport wind NNE to ENE at 6 - 10 mph during the morning becoming light and variable during the afternoon.  Surface wind light and variable.



FRIDAY

Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 4500 to 5000 ft during the afternoon.  Transport wind light and variable.  Surface wind light and variable.



SATURDAY

Mixing height below 1000 ft early rising to 1600 to 2600 ft by late morning and through 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, October 6, 2010.

    ==================================================================



Zone 630 and 632:

Avoid ignitions within 15 miles to the ENE through SSW of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 30 miles in all directions of SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.  Recommend against burning units that will smolder significantly overnight.  Complete ignitions by 3:30pm.



Zone 633 - 638:

Avoid ignitions within 12 miles to the ESE through S of SSRAs.  For units that will smolder significantly through the night avoid burning within at least 20 miles in all directions of SSRAs.  Verify transport winds away from SSRAs if burning in any other direction.  Complete ignitions by 3:30pm.



    =========================================================

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/20101005/673d7700/attachment.html>