Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Dec 13 2022 09:12:26

ACUS48 KWNS 130912
SWOD48
SPC AC 130910

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0310 AM CST Tue Dec 13 2022

Valid 161200Z - 211200Z

....DISCUSSION...
Various model ensemble members all depict generally cool and stable
conditions over most of the CONUS through the entire D4-D8 period,
with little if any chance of severe storms.  Initially, a deep upper
low will exist over the Great Lakes on Fri/D4, with an expansive
area of cyclonic flow aloft from the Rockies to the East Coast. This
will maintain offshore flow across the Gulf of Mexico and Mid
Atlantic through at least Sun/D6 as the upper low shifts east.
Beyond Sun/D6, predictability is reduced further, but a brief period
of height rises/warm advection could occur over the southern
Plains/Gulf of Mexico, with weak elevated instability skirting the
TX/Gulf Coasts. Regardless, any shower/thunderstorm activity will
likely be weak/elevated, due to antecedent cool air over land.

...Jewell.. 12/13/2022

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