Thursday August 17, 2006

THROUGH 1600Z August 17, 2006.

The cluster of large fires burning in the Okanogan National Forest in
north central Washington state were responsible for a large area of
moderately dense to locally dense smoke which was spreading southward
and covered much of the eastern two-thirds of Washington, the northern
Idaho panhandle, and north central Oregon. It appeared as though a
bit of the smoke may have been able to move westward over the Cascade
range and possibly close to Seattle, WA, and Portland, OR. However,
cloudiness present west of the Cascades is making verification of this
assumption difficult.

Northern California:
A relatively small patch of locally dense smoke was observed in the
general vicinity of the fires over western Siskiyou and northwestern
Trinity Counties of northern California. The smoke appeared to be moving
to the west or southwest and into northern Humboldt County, but surface
flow was rather light and variable.

Nevada/Idaho/Utah/Wyoming/Montana/the Dakotas/Nebraska:
Patchy areas of smoke were visible this morning across portions of this
region which were primarily believed to have originated from the very
large fires burning in central Elko County of northeastern Nevada. The
densest smoke was confined to northeastern Nevada and was currently moving
in an easterly or east-northeasterly direction. Much thinner smoke was
noted moving eastward across southeastern Idaho, northern Utah, far
western Wyoming, and possibly southern Montana. Widespread cloudiness
over southern Montana was hindering smoke detection there. Relatively
thin smoke was then also visible farther to the east over the Dakotas
and western Nebraska.

Oklahoma/Arkansas/eastern Texas/western Louisiana:
A narrow plume of thin to locally moderately dense smoke was observed this
morning moving to the north-northwest from a significant fire located in
eastern Atoka County of southeastern Oklahoma. The smoke plume traveled
into north central Oklahoma between the Oklahoma City and Tulsa metro
areas. Morning visible imagery also showed a detached batch of thin to
moderately dense smoke over western Arkansas which may be associated with
the fire over Atoka County since visible imagery last night indicated
a large smoke plume moving in a northeasterly direction. Fires were
detected this morning over the eastern Texas counties of Polk and near the
Harrison-Panola County border as well as the western Louisiana Parish of
Sabine. Localized smoke plumes were observed particularly with the Polk
County fire. The Polk County plume was currently moving in a westerly
direction. In addition, visible imagery also showed an area of haze
across eastern Texas and western Louisiana which may possibly contain
a bit of leftover smoke from some of the fires burning in this region
yesterday. However, the presence of cirrus clouds over this region was
adding to the difficulty in detecting any leftover smoke.



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.