Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Dec 23 2023 09:03:28

ACUS48 KWNS 230902
SWOD48
SPC AC 230900

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0300 AM CST Sat Dec 23 2023

Valid 261200Z - 311200Z

....DISCUSSION...
Severe-thunderstorm potential will be low during the Day 4-8 period.
An upper low will migrate across the Midwest/Great Lakes region
while several shortwave troughs maintain general upper troughing
across the eastern U.S. for most of the period. At the same time, an
amplified upper ridge will move across the western states before an
upper trough approaches the Pacific coast toward Day 8/Sat. At the
surface, a cold front will move offshore the Atlantic coast by late
Day 5/Wed. Surface high pressure building over the central U.S. in
the wake of the cold front, and favorable moisture becoming confined
to the southern Gulf through much of the period, will preclude
thunderstorm potential beyond those associated with the cold front
across the Mid-Atlantic vicinity on Day 4/Tue.

...Leitman.. 12/23/2023

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