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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0159 AM CDT Wed Jul 27 2022

Valid 271200Z - 281200Z

...Synopsis...
An amplified large-scale ridge will persist over the northwestern
CONUS, while a belt of moderate northwesterly midlevel flow
overspreads the northern Rockies. This large-scale pattern will
result in an overlap of hot/dry boundary-layer conditions (10-15
percent RH) and breezy northerly surface winds near 15 mph over
parts of southeast OR, southwest ID, and northern NV. Given highly
receptive fuels over these areas, elevated fire-weather conditions
will be possible during the afternoon. In addition, diurnal heating
coupled with adequate midlevel moisture over the northern Rockies
will support isolated high-based thunderstorms during the afternoon
-- aided by a subtle midlevel impulse crossing the area. Any storms
that can develop and overspread critically dry fuels and the
deeply-mixed boundary layer could lead to isolated lightning-induced
ignitions. 

Farther west along the Cascades in northern CA into southern OR,
additional high-based thunderstorm development will be possible as
upslope flow strengthens amid modest buoyancy. While storm coverage
is expected to be limited, even isolated strikes over this area
could result in ignitions owing to very dry fuels. 

Over the southern Plains, breezy southerly surface winds and 15-20
percent minimum RH could favor locally elevated conditions during
the afternoon. However, these conditions look too marginal/localized
for highlights.

..Weinman.. 07/27/2022

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