Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Oct 31 2025 08:41:52

ACUS48 KWNS 310841
SWOD48
SPC AC 310840

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0340 AM CDT Fri Oct 31 2025

Valid 031200Z - 081200Z

....DISCUSSION...
....Monday/Day 4 to Wednesday/Day 6...
West-northwesterly mid-level flow will be in place over the eastern
two-thirds of the nation during the early to mid-week. Through this
time, surface high pressure will remain dominant from the Great
Plains eastward into the eastern U.S. Further west, a mid-level
trough is forecast to move into California on Wednesday.
Thunderstorms will be possible along the coast of California as the
system moves inland.

....Thursday/Day 7 and Friday/Day 8...
The West Coast mid-level trough is forecast to move quickly eastward
across the Rockies on Thursday. Ahead of the system, isolated to
scattered thunderstorms appear most likely Thursday afternoon and
evening across parts of the southern and central Plains. A severe
threat will be possible with this activity. Ahead of the mid-level
trough, a severe threat may again develop over the Ozarks and mid
Mississippi Valley on Friday. The severe threat on Thursday and
Friday is expected to remain isolated, mainly due to relatively weak
instability.

...Broyles.. 10/31/2025

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