217
FNUS22 KWNS 051817
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0116 PM CDT Tue Aug 05 2025

Valid 061200Z - 071200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE GREAT BASIN INTO
THE CENTRAL ROCKIES...

The main change made to the Day 2 Fire Weather Outlook update was to
expand isolated dry thunderstorm highlights into eastern Utah. Here,
sparse thunderstorm development is possible. However, fuels are
quite receptive to fire spread, so any lightning strikes that manage
to occur will have high ignition potential. Otherwise, the previous
forecast remains on track, with no other changes made.

..Squitieri.. 08/05/2025

.PREV DISCUSSION... /ISSUED 0201 AM CDT Tue Aug 05 2025/

...Synopsis...
Similar to Day 1/Tuesday, enhanced west-southwesterly flow aloft
will remain in place across much of the Great Basin into the
northern/central Rockies -- between an expansive midlevel
anticyclone over the Southwest and an increasingly pronounced
large-scale trough over the Northwest.

...Great Basin into the central Rockies...
The enhanced deep-layer west-southwesterly flow will overspread a
dry/deeply mixed boundary layer during the afternoon. As a result,
10-15 percent RH will develop amid 15-20 mph sustained
west-southwesterly surface winds. The greatest overlap of strong
winds and low RH is expected beneath the core of the stronger
deep-layer flow -- extending from east-central NV across
southern/central UT and northwest CO. Here, the combination of hot,
dry, and breezy conditions atop receptive fuels will favor another
day of critical fire-weather conditions.

...Dry Thunderstorms - Southwest into the central Rockies...
A midlevel moisture plume will expand northeastward from the
Southwest into the central Rockies, supporting isolated diurnally
driven thunderstorms over the higher terrain during the afternoon.
Inverted-V soundings and 0.50-0.75 inch PW will favor mostly dry
storms, which will pose a risk of lightning-induced ignitions and
gusty/erratic outflow winds.

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

$$