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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0202 AM CDT Sat Sep 07 2024

Valid 071200Z - 081200Z

...Synopsis...
An upper ridge over the western CONUS is forecast to slowly weaken
under the influence of an approaching Pacific trough today and
tonight. As ascent from the trough overspreads mid-level moisture,
thunderstorms are likely across portions of the Cascades in OR and
southern WA. Model and observed soundings show weak buoyancy atop
hot and well-mixed boundary-layer profiles, supporting low
precipitation efficiency, especially with storm motions greater than
20 kt. Hi-res model guidance suggests dry thunderstorm potential is
highest across portions of the central Cascades, though more
isolated and drier storms will also be possible across the northern
Sierra and portions of southern CA.

...Sierra and northwest Great Basin...
To the south of the main trough, moderate mid-level flow should
gradually expand over parts of northern CA and the northern Great
Basin. Gusty winds of 15-20 mph in the lee of the Sierra are likely
to overlap with afternoon RH values of 15-20%. With receptive fuels
and at least a few hours of dry and breezy conditions possible,
elevated fire-weather conditions are likely.

..Lyons.. 09/07/2024

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