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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0153 AM CDT Thu Jul 21 2022

Valid 211200Z - 221200Z

...NO CRITICAL AREAS...

...Synopsis...
A mid-level shortwave trough is forecast to move onshore across the
northwestern periphery of a strong mid-level ridge centered over the
Four Corners. Southwesterly flow aloft will increase accordingly,
supporting locally gusty surface winds across much of the West.
Beneath the ridge, very hot temperatures and isolated storms may
produce locally elevated fire weather concerns across the southern
Plains.

...Northern Great Basin into the central Rockies...
Increasing southwesterly flow aloft ahead of the advancing trough
should support an uptick in downslope winds off the higher terrain
of the Great Basin and central Rockies this afternoon and evening.
While not particularly strong, enhanced momentum transport and local
terrain effects will aid occasional gusts to 20 mph. Given afternoon
RH values below 15% and very dry fuels across much of the West, some
localized fire weather threat will likely develop. The greatest
confidence in a few hours of locally elevated conditions will remain
across portions of southern OR, ID, into central WY. Elsewhere
across the West, periodic dry and gusty conditions will be possible,
but sustained elevated fire weather conditions are not expected.

...Southern Plains...
Warm temperatures and low surface RH are again forecast beneath the
strong upper ridge. Winds are forecast to be weak but may
occasionally reach near 15 mph through the afternoon. These
conditions may contribute to locally elevated fire weather concerns
given drought-stricken fuels. The strong daytime heating will also
support isolated afternoon thunderstorms across much of the southern
Plains. While not dry given PWAT values of 1.8 inches, occasional
lightning strikes may result in ignitions of highly receptive fuels.

..Lyons.. 07/21/2022

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