Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Jun 30 2025 08:55:14

ACUS48 KWNS 300855
SWOD48
SPC AC 300853

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0353 AM CDT Mon Jun 30 2025

Valid 031200Z - 081200Z

....DISCUSSION...
A mid-level ridge will start the extended period across the Plains
on D4/Thursday. This ridge will shift east through the extended
period. A surface low will develop in the lee of the Rockies and
move slowly north and east, reaching eastern Ontario by D7/Sunday.
This surface low and its associated cold front will likely be the
only potential for any severe weather during the extended period.
However, at this time it appears the stronger shear will be well
displaced from the greater instability. Therefore, severe weather
probabilities are not necessary at this time.

Outside of this frontal zone during the Day 4 to Day 7 period,
thunderstorms are likely. However, weak lapse rates and very weak
shear is anticipated, with minimal storm organization.

...Bentley.. 06/30/2025

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