SPC Day 1 Fire Weather Outlook
SPC Day 1 Fire Weather Outlook


Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0158 AM CDT Sat Aug 02 2025

Valid 021200Z - 031200Z

...CRITICAL FIRE WEATHER AREA FOR PARTS OF SOUTHERN/SOUTHEASTERN
UTAH INTO NORTHWESTERN COLORADO...

...Synopsis...
Along the northern periphery of a large-scale ridge centered on the
Southwest/northern Mexico, a westerly midlevel jet streak will
overspread the southern/eastern Great Basin. In response, a weak
surface low will develop over eastern UT, resulting in a tightening
pressure gradient across the area.

...Southern/eastern UT into northwest CO...
Diurnal heating will result in a deeply mixed boundary layer across
the southern/eastern Great Basin, where widespread single-digit RH
is expected during the afternoon. Boundary-layer mixing into the
strengthening flow aloft, coupled with an enhanced pressure
gradient, will yield 20 mph west-southwesterly surface wind from
southern/eastern UT into northwest CO. The combination of breezy
surface winds and low RH will favor critical fire-weather
conditions, given receptive fuels across the region.

...Dry Thunderstorms - Intermountain West...
Diurnally driven high-based thunderstorms are expected across the
Intermountain West, aided by weak large-scale forcing for ascent
ahead of a deamplifying midlevel trough. Around 0.7 inch PW and a
deep/dry boundary layer will support mostly dry thunderstorms,
capable of lightning-induced ignitions over any receptive fuels.

..Weinman.. 08/02/2025

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


Read more
https://www.spc.noaa.gov/products/fire_wx/fwdy1.html