Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Dec 20 2022 16:56:06

ACUS02 KWNS 201655
SWODY2
SPC AC 201654

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1054 AM CST Tue Dec 20 2022

Valid 211200Z - 221200Z

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

....SUMMARY...
Severe thunderstorms are not forecast on Wednesday.

....Synopsis and Discussion...
A weak mid-level disturbance will move from FL and coastal GA/SC
into the western Atlantic Wednesday morning. Rich low-level moisture
will remain confined along/south of a surface front that will be
draped across the central/southern FL Peninsula. While isolated
thunderstorms may occur across this region through the day, the lack
of appreciable large-scale ascent aloft should limit overall
convective coverage.

A prominent upper trough is forecast to amplify further Wednesday
across a broad part of the central CONUS as it translates eastward.
A leading shortwave trough embedded within the larger upper trough
should move quickly across the southern/central Plains to the
Southeast and OH Valley through the period. Surface ridging centered
over the East Coast will be slow to erode through Wednesday night.
This should inhibit the return of appreciable low-level moisture
inland across coastal SC. But, enough elevated instability may
coincide with increasing forcing for ascent to support occasional
thunderstorms late Wednesday night over parts of SC.

...Gleason.. 12/20/2022

$$

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