Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Oct 23 2025 00:31:13

ACUS01 KWNS 230031
SWODY1
SPC AC 230029

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0729 PM CDT Wed Oct 22 2025

Valid 230100Z - 231200Z

....NO SEVERE THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Isolated thunderstorms are possible, primarily across portions of
the southwestern U.S., this evening.

....01z Update...

Water-vapor imagery depicts an upper low advancing inland across
southern CA. This feature will move into northwestern AZ by 23/12z
as 500mb speed max translates across the lower CO River Valley into
eastern AZ late tonight. Along/north of this jet, cool midlevel
temperatures and steep lapse rates are proving favorable for
isolated thunderstorms. While nocturnal cooling should lead to
weaker updrafts and less lightning by late evening, a few flashes
may continue to accompany elevated convection that forms in response
to moistening midlevels ahead of the trough.

...Darrow.. 10/23/2025

$$

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