Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Aug 08 2023 08:32:32

ACUS48 KWNS 080832
SWOD48
SPC AC 080830

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0330 AM CDT Tue Aug 08 2023

Valid 111200Z - 161200Z

....DISCUSSION...
Some severe potential could persist into Day 4/Fri across parts of
the Lower-MO/Mid-MS Valley vicinity as a weak surface front develop
southeast across the region. However, there is large spread among
guidance concerning the evolution of this feature along with an
attendant surface low and intensity of a midlevel shortwave impulse.
Large model spread continues through the remainder of the period.
Though overall a less amplified and weak flow regime is forecast for
much of the CONUS.  The exception may be near the northern tier of
the U.S. from the northern Plains to the Great Lakes/Northeast where
some guidance shows a somewhat progressive pattern and a series of
midlevel shortwave troughs migrating along the international border.
While some severe potential may develop across central portions of
the CONUS, predictability is too low at this time to delineate any
15 percent or greater areas.

...Leitman.. 08/08/2023

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