Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Sep 07 2023 08:40:08

ACUS48 KWNS 070840
SWOD48
SPC AC 070838

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0338 AM CDT Thu Sep 07 2023

Valid 101200Z - 151200Z

....DISCUSSION...
....Sunday/Day 4 to Tuesday/Day 6...
From Sunday to Tuesday, an upper-level trough in the Southeast is
forecast to move northeastward and weaken, as an upper-level trough
moves southeastward into the mid Mississippi Valley. A cold front is
forecast to move southward into the central Plains on Sunday, and
then southward into the southern Plains by Tuesday. Scattered
thunderstorms appear likely to develop along and ahead of this front
each afternoon. The most likely location for thunderstorms, and
possibly an isolated severe threat, is in western Kansas on Sunday,
in southern Kansas and Oklahoma on Monday, and in north Texas on
Tuesday. In most areas, the severe threat each day is expected to be
marginal, mainly due to the weakness in instability that is
forecast.

....Wednesday/Day 7 and Thursday/Day 8...
On Wednesday and Thursday, an upper-level trough is forecast to move
through the Ohio and Tennessee Valleys, reaching the southern and
central Appalachians by Thursday. Thunderstorm development, and
possibly an isolated severe threat, will be possible ahead of the
trough Wednesday afternoon across parts of the Atlantic Seaboard. On
Thursday, a cold front is forecast to move into the western
Atlantic, mitigating the potential for severe storms.

...Broyles.. 09/07/2023

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