Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Sep 26 2024 08:17:48

ACUS48 KWNS 260817
SWOD48
SPC AC 260816

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0316 AM CDT Thu Sep 26 2024

Valid 291200Z - 041200Z

....DISCUSSION...
The upper low over the OH Valley will weaken and become an open wave
early next week. Meanwhile, upper troughing across the east will be
reinforced through midweek by a shortwave trough developing
east/southeast across the Great Lakes. A surface cold front will
develop east/southeast across much of the Plains and Midwest through
Day 6/Tue. However stronger deep-layer flow will remain displaced
well to the north and behind the front. Meanwhile, low-amplitude
upper ridging will prevail across the Southwest/Four Corner, while a
series of shortwave troughs migrate through more progressive
northern stream flow near the international border in the vicinity
of the Pacific Northwest and northern Rockies. Overall severe
thunderstorm potential appears low during the Day 4-8 period.

...Leitman.. 09/26/2024

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