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FNUS21 KWNS 230513

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1112 PM CST Wed Nov 22 2017

Valid 231200Z - 241200Z


A stout upper ridge will remain anchored across the Southwestern
U.S. during the Thanksgiving holiday.  Meanwhile, a shortwave will
quickly migrate eastward from the Pacific Northwest into the
Northern Rockies.  A belt of very strong (80-100 kt) mid-level flow
will traverse much of the Intermountain West on the periphery of
this trough throughout the forecast period.

At the surface, a ridge centered over western Colorado will weaken
substantially throughout the day, while another ridge remains nearly
stationary across the Eastern U.S.  A weak trough/cold front will
migrate southward across the Plains throughout the evening as well.

The weakening surface ridge across the West will result in
slackening low-level flow that will lessen the fire weather threat
across dry coastal ranges of southern California.  With relatively
high RH in other dry areas of the country, no fire weather
highlights will be needed for this outlook.

..Cook.. 11/23/2017

...Please see for graphic product...

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