323
FNUS28 KWNS 052020
FWDD38

Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0318 PM CDT Tue Aug 05 2025

Valid 071200Z - 131200Z

A mid-level trough will gradually progress across the northwestern
U.S. through the weekend, before ejecting into the Plains and zonal
flow becoming established west of the Rockies by early next week.
Multiple mid-level impulses are poised to pivot around the main
upper trough, promoting critically dry and windy conditions across
parts of the Interior West toward the end of this week, with
isolated dry thunderstorms possible each day through the weekend.

...Days 3-4 (Thursday-Friday) - Great Basin into the Rockies...
As multiple mid-level impulses continue to graze the Interior West,
15-25 mph sustained southwesterly surface wind should coincide with
5-15 percent RH Thursday and Friday. Fuels are receptive across the
entire region, and 40/70 percent highlights have been added where
confidence is highest in the aforementioned dry/windy conditions
overlapping for several hours each afternoon. Surface winds should
be strongest across the Great Basin on Thursday, where high-end
Critical conditions are possible as a 500 mb wind maximum glances by
to the north.

...Days 3-6 (Thursday-Sunday) - Portions of the Southwest...
Toward the end of the week into the weekend, isolated thunderstorm
development is expected each afternoon to the immediate south and
east of the Four Corners region. Modest southwesterly 500 mb flow
pivoting around an upper ridge will encourage forward motion of any
thunderstorms that develop. Given the presence of a hot and dry
boundary layer across the Southwest, these storms should be
high-based, with at least a mix of wet/dry storms likely. Isolated
dry thunderstorm highlights have been added on Thursday-Sunday for
areas that have experienced minimal rainfall, and where fuels appear
to be highly susceptible to lightning-induced ignitions.

..Squitieri.. 08/05/2025

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

$$