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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0201 AM CDT Tue Aug 02 2022

Valid 021200Z - 031200Z

...CRITICAL FIRE WEATHER AREA FOR PARTS OF MONTANA INTO FAR WESTERN
NORTH DAKOTA...

...Synopsis...
Along the northern periphery of a large-scale ridge centered over
the western CONUS, a belt of deep/enhanced westerly flow will extend
from the Pacific Northwest into the northern Rockies and adjacent
High Plains. Multiple shortwave troughs will move through the
westerly flow aloft during the day, with the strongest midlevel flow
expected across parts of northern MT into northwest ND. 

...Wind/RH...
Deep boundary-layer mixing into the belt of strong flow aloft will
result in a swath of 20-25 mph sustained westerly surface winds amid
15-20 percent RH across portions of MT into far western ND this
afternoon. Given highly receptive fuels over this area, critical
conditions are expected. Farther west, westerly downslope flow will
favor warming/drying in the lee of the Cascades in WA into northern
OR. Here, 15-20 mph sustained westerly surface winds coupled with
15-20 percent minimum RH will yield elevated to locally critical
conditions.

...Dry Thunderstorms...
Large-scale ascent acco*panying the shortwave troughs and sufficient
midlevel moisture/instability will support high-based thunderstorm
development along and east of the Cascades in OR into northern CA
and farther east in the northern Rockies. While many of these storms
will be associated with accumulating rainfall given 1.0-1.2 in PW,
isolated lightning-induced ignitions will still be possible on the
periphery of precipitation cores.

..Weinman.. 08/02/2022

...Please see www.spc.noaa.gov/fire for graphic product...