505
FNUS22 KWNS 181853
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0152 PM CDT Mon Aug 18 2025

Valid 191200Z - 201200Z

The Elevated area was enlarged based on the latest high-resolution
forecast guidance as south-southwest winds increase amid a very dry
airmass ahead of a dry cold front. South-southwest sustained winds
around 15 mph and gusts of 20-30 mph with minimum RH of 5-15% are
expected from along/east of the southern Sierra through
central/eastern Nevada and into southern/eastern Idaho and far
southwest Montana. Some mid/upper-level clouds over eastern Nevada
and into portions of Idaho and Montana could help mitigate fire
weather conditions across these portions of the Elevated area.
Additionally, while there were some areas of wetting rain in
southern/eastern Idaho into southwest Montana over the weekend,
holdovers are a concern as temperatures and winds increase with RH
decreasing.

..Nauslar.. 08/18/2025

.PREV DISCUSSION... /ISSUED 0201 AM CDT Mon Aug 18 2025/

...Synopsis...
A amplifying mid-level ridge over the Four Corners region and
north-central U.S. will support a large area of hot and dry
conditions to much of the Intermountain West Tuesday. While flow
aloft will not be overly strong as the ridge continues to build,
occasional 15 mph surface gusts and terrain-augmented winds are
possible during the afternoon over parts of the eastern Great Basin.
In combination with the very hot and dry conditions, elevated
fire-weather conditions are expected for a few hours Tuesday
afternoon within exceptionally dry fuels.

...Northern Rockies...
To the northwest, a mid-level trough and remnant monsoon moisture
should continue to promote isolated thunderstorm potential across
the higher terrain of the northern Rockies. While lightning is
possible, the very isolated storms are expected over areas with less
receptive fuels. This should largely limit, but not entirely negate
ignition potential Tuesday.

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

$$