Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Sep 04 2023 17:32:20

ACUS02 KWNS 041732
SWODY2
SPC AC 041730

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1230 PM CDT Mon Sep 04 2023

Valid 051200Z - 061200Z

....THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE UPPER
MISSISSIPPI VALLEY VICINITY...

....SUMMARY...
Isolated severe storms -- accompanied primarily by hail/wind
potential -- will be possible on Tuesday across parts of the Upper
Mississippi Valley.

....Upper Mississippi Valley...
Thunderstorms -- and some hail risk -- may be ongoing at the start
of the period across portions of the eastern Dakotas and
northwestern Minnesota, near an advancing cold front and associated
short-wave advancing eastward across the Plains.  Convection should
gradually increase through the day across the Minnesota vicinity as
daytime heating fosters moderate warm-sector destabilization.

As stronger mid-level southwesterlies associated with the advancing
trough spread into/atop the region, isolated stronger storms are
forecast to evolve during the afternoon, with a few rotating storms
possibly evolving.  Large hail and damaging winds will be the
primary risks, though a brief tornado cannot be ruled out.  With
time, some upscale growth of convection into an MCS may occur,
spreading eastward into northern Wisconsin and possibly western
Upper Michigan into the overnight hours.

...Goss.. 09/04/2023

$$

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