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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1133 AM CDT Mon Aug 22 2022

Valid 221700Z - 231200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF CENTRAL IDAHO AND
SOUTHWESTERN MONTANA...

The forecast remains on track, and only minor adjustments were made
to the ongoing Dry Thunderstorm highlights based on the latest
observations and high-resolution guidance. In addition to the
fire-weather concerns described below, 10-15 percent RH and breezy
westerly surface winds could result in locally elevated conditions
over portions of southeast OR, southwest ID, and north-central NV
this afternoon.

..Weinman.. 08/22/2022

.PREV DISCUSSION... /ISSUED 0201 AM CDT Mon Aug 22 2022/

...Synopsis...
A shortwave trough evident in satellite imagery this morning near
the Pacific Northwest coast is forecast to move eastward through the
day.  This trough will act to break down the upper-level ridge over
the northern Intermountain West.  Ahead of this trough,
thunderstorms are expected to be ongoing early in the day across
northeastern Oregon and southeastern Washington, where a mix of wet
and dry thunderstorms are probable with PW values over 0.75". 
Farther east, strong heating will lead to warm, deeply mixed
boundary layers across Idaho and southwestern Montana.  By the
afternoon, the shortwave trough will help to initiate scattered
thunderstorms in an environment characterized by RH values below 20%
and PW values less than 0.75".  Given the dry fuels across the
region, scattered coverage of dry thunderstorms warrants a critical
fire-weather highlight.

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