Saturday August 6, 2006

THROUGH 1700Z August 6, 2006.

Upper Midwest of US:
Moderate to dense smoke from previous day's emissions from the Tripod
fire in N Washington has drifted in the midlevels of the troposphere
(~20Kft) just behind the cold front that is passing S James Bay To
the Keweenaw Peninsula in the UP of MI across N WI to Sioux City,IA.
The smoke, most dense over S MN... extends back west from this front
across All of SD, S MN, NW WI, N NE, to the high plains of MT.  There it
thins out to very thin smoke but is still connected to the smoke from
last night's emissions...which are discussed below.

Washington/N Idaho/Montana/SE British Columbia/S Alberta:
Dense smoke from the Tripod fire NE of Twisp, WA in the Okanogan Mtn
Range continues to be emitted but due to changing wind directions with
height and time is moving N to SE from the fire across. Washington.
The area of smoke then is more consolidated over the SE portions of
British Columbia, then is located in a line along the US/Canadian boarder
from N ID to the MT/ND/Saskatchewan line.  The smoke in this line.

An area of thin smoke can barely be detected through high level cirrus
clouds across NW California int W OR...this smoke is from the multiple
large complexes burning over NW California.

An area of midlevel moderately dense smoke from two new(unnamed) fires
acorss the far southern Sierra Mtns in California has drifted away from
the source region over night and is currently moving N across central
California and central and northern Nevada.  The shape of the plume is
very crooked and snake-like with lots of bends and kinks in the line.
Best guess of the line is on average 75km wide from Redding, CA to Lake
Tahoe where it breaks East and North. The eastern fork extends E to the
Shoshone Mtns. The northern fork extends north into the Black Rock Desert
where it too extends E across N NV (north of I-80) to just north Elko, NV.

NW NW Territories:
An area of thin to moderately dense smoke from the fires around Great Bear
Lake is remaining stationary has it is located in an area of limited flow.
The smoke appears to be located mostly between the Lake and the Dolphin
and Union Strait.



Unless otherwise indicated:
  • Areas of smoke are analyzed using GOES-EAST and GOES-WEST Visible satellite imagery.
  • Only a general description of areas of smoke or significant smoke plumes will be analyzed.
  • A quantitative assessment of the density/amount of particulate or the vertical distribution is not included.
  • Widespread cloudiness may prevent the detection of smoke even from significant fires.