Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0755 PM CDT Tue Sep 02 2025
Valid 030100Z - 031200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE MID MISSOURI VALLEY...
...SUMMARY...
Thunderstorms with isolated severe gusts and hail will be possible
early this evening across parts of the mid Missouri Valley.
...Mid Missouri Valley...
Northwest mid-level flow is evident on water vapor imagery from the
Great Plains into the Mississippi Valley. At the surface, a cold
front is moving through the north-central U.S. Ahead of the front,
surface dewpoints are in the mid 60s F, and the RAP has an axis of
moderate instability from central Nebraska into western Minnesota.
Isolated strong storms are ongoing near this axis of instability.
Near the storms, the Sioux Falls WSR-88D VWP has 0-6 km shear near
35 knots, mostly due to speed shear in the mid-levels. This may be
enough for an isolated severe threat over the next hour or two in
the vicinity of Sioux Falls, South Dakota and Sioux City, Iowa. The
primary threats will be marginally severe wind gusts and hail.
..Broyles.. 09/03/2025
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