737
FNUS21 KWNS 220700
FWDDY1

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0159 AM CDT Fri Aug 22 2025

Valid 221200Z - 231200Z

...Synopsis...
An expansive midlevel ridge will remain in place across much of the
West, while a well-established monsoonal moisture plume persists
across the Southwest into the Great Basin.

...Dry Thunderstorms...
Diurnal heating/boundary-layer mixing amid the monsoonal moisture
will yield sufficient buoyancy for isolated to widely scattered
thunderstorms across a broad region extending from the Sierra into
the Great Basin and central Rockies during the afternoon/evening.
Inverted-V profiles, characterized by 0.70 to 0.90 inch PW, will
favor a mix of wet/dry high-based storms -- posing a risk of
lightning-induced ignitions and gusty/erratic outflow winds over
dry/receptive fuels.

...North-central Oregon...
Along the northern periphery of surface high pressure over the
Southwest/Great Basin, a modest offshore pressure gradient will
develop across the Northwest. As a result, breezy/gusty
east-northeasterly surface winds are expected amid 15-percent RH
across north-central OR, with locally enhanced winds expected
through the Columbia Gorge. Given dry fuels, elevated fire-weather
conditions are expected.

...Coastal New England...
On the far western fringes of Hurricane Erin, dry/breezy northerly
winds atop receptive fuels will favor elevated fire-weather
conditions across coastal New England during the afternoon.

...Southern California...
An unseasonably hot and unstable air mass along with critically dry
fuels will continue to promote elevated fire-weather conditions away
from the coast in southern CA, despite only modest surface winds.
Additionally, isolated high-based thunderstorms will pose a
localized risk of lightning-induced ignitions and gusty/erratic
winds away from any heavier rain cores.

..Weinman.. 08/22/2025

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

$$