Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Wed Dec 28 2022 05:54:54

ACUS01 KWNS 280554
SWODY1
SPC AC 280553

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1153 PM CST Tue Dec 27 2022

Valid 281200Z - 291200Z

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

....SUMMARY...
Thunderstorms will be possible in the Four Corners and in the Sabine
River Valley today into tonight. No severe threat is expected across
the continental U.S. through tonight.

....DISCUSSION...
An upper-level ridge will move eastward across the Great Lakes and
Ohio Valley today as an upper-level trough moves across the western
U.S. Mid-level southwest flow will enable moisture return across the
Texas and Louisiana Coastal Plain. Although instability will remain
weak in this area, elevated thunderstorms could develop in the
Sabine River Valley as low-level flow strengthens during the evening
and overnight period. Out west, a few thunderstorms could develop
ahead of an upper-level trough in the Four Corners region. This will
be due to strong large-scale ascent, mid-level moisture and steep
lapse rates. In spite of the potential for thunderstorms in these
two areas, a severe threat is not expected today or tonight.

...Broyles/Thornton.. 12/28/2022

$$

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