424
FNUS21 KWNS 130700
FWDDY1

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0159 AM CDT Thu Jun 13 2024

Valid 131200Z - 141200Z

...Synopsis...
A midlevel trough will advance eastward across southern CA, while a
related belt of moderate/strong southerly flow aloft overspreads
western AZ into southern NV and UT. This will promote a tightening
surface pressure gradient and 15-20 mph sustained southerly surface
winds across these areas. These winds, coupled with a deep/dry
boundary layer (single-digit RH) and receptive fuels, will favor
elevated to locally critical fire-weather conditions.

Additionally, isolated thunderstorms are possible during the late
afternoon into the overnight hours across portions of AZ into UT --
aided by ascent preceding the aforementioned midlevel trough. If
afternoon thunderstorms can develop, these storms would be
high-based in an environment characterized by a deep inverted-V
thermodynamic profile -- and isolated lightning-induced ignitions
would be possible. However, confidence in afternoon storm
development is low owing to very marginal instability, precluding
Dry Thunderstorm highlights at this time. Confidence in thunderstorm
development is higher during the overnight period, when a mix of
wet/dry storms are expected. However, increasing boundary-layer RH
and midlevel moisture may temper the overall threat of ignitions.

..Weinman.. 06/13/2024

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

$$