991
FNUS21 KWNS 080652
FWDDY1

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0152 AM CDT Tue Jul 08 2025

Valid 081200Z - 091200Z

...Synopsis...
Along the northwestern periphery of an expansive midlevel ridge over
the Southwest, a midlevel low will approach the northern CA coast as
it gradually phases with a robust midlevel trough moving across
British Columbia. Large-scale ascent preceding the midlevel low will
promote isolated dry/high-based thunderstorms over the higher
terrain of OR into far southeastern WA. Given dry/receptive fuels
and limited rainfall with these storms, lightning-induced ignitions
will be possible, along with strong convective outflow.

Additionally, strong deep-layer westerly flow in the base of the
midlevel trough moving across British Columbia will overspread the
Cascades, resulting in dry/breezy downslope flow and elevated
fire-weather conditions in the Columbia Basin.

Farther south, a belt of enhanced midlevel southwesterly flow will
overspread the Great Basin between the large-scale ridge and
midlevel low. Deep boundary-layer mixing into this enhanced flow
aloft will favor dry/breezy conditions over central NV into western
UT, and given dry fuels, elevated fire-weather conditions are
expected.

..Weinman.. 07/08/2025

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

$$