SPC AC 210053
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0753 PM CDT Mon Sep 20 2021
Valid 210100Z - 211200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM CENTRAL
WISCONSIN SOUTH-SOUTHWESTWARD TO CENTRAL MISSOURI...
...SUMMARY...
A couple of severe thunderstorms -- capable of producing locally
damaging wind gusts and hail -- will continue through mid evening
across parts of the Upper Mississippi Valley southward to central
Missouri.
...Discussion...
A semi-continuous line of thunderstorms is ongoing at this time from
western Lake Superior south-southwestward to far southeastern
Kansas, near the advancing cold front. While this band of storms is
expected to continue through the overnight hours, limited
instability -- diminishing gradually with the loss of daytime
heating -- is indicated across most of the region. As such,
severe-weather potential is also expected to continue to gradually
wane through the evening hours. In the mean time however, will
maintain a narrow corridor of SLGT risk, from central Wisconsin to
central Missouri, to reflect the zone of greatest potential for
damaging winds and/or hail.
..Goss.. 09/21/2021
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