221
FNUS28 KWNS 212151
FWDD38

Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0449 PM CDT Mon Jul 21 2025

Valid 231200Z - 291200Z

A mid-level trough is forecast to eject across the northern Rockies
and into Canada by the midweek. A portion of this trough is progged
to remain as a cutoff low off the California coast D3/Wednesday
through Day 6/Friday. A secondary trough will deepen across the
western United States next weekend, with continued dry and
occasionally breezy conditions across the Southwest, Great Basin,
and Pacific Northwest.

...D3/Wednesday-D4/Thursday...
Dry thunderstorm potential returns across portions of northern
California into southern Oregon and eastern Nevada D3/Wednesday into
D4/Thursday. Initially moisture and forcing will be modest, with
potential for isolated dry thunderstorms mainly across northeastern
California on D3/Wednesday, possible continuing overnight into
D4/Thursday. On D4/Thursday moisture increases which will likely
lead to an increase in coverage and a transition to a mix of wet/dry
thunderstorms. As instability increases, lightning efficiency will
increase with more widespread strikes amid critically dry fuels. As
such, isolated dry thunderstorm chances were included on both days
across portions of northern California into far western Utah and
southern Oregon.

..Thornton.. 07/21/2025

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

$$