ACUS03 KWNS 070723
SWODY3
SPC AC 070723

Day 3 Convective Outlook  
NWS Storm Prediction Center Norman OK
0223 AM CDT Fri Aug 07 2026

Valid 091200Z - 101200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM PARTS OF
THE CENTRAL AND NORTHERN PLAINS EAST-SOUTHEASTWARD INTO THE SOUTHERN
GREAT LAKES REGION...

...SUMMARY...
Thunderstorms with isolated severe wind gusts and hail will be
possible Sunday afternoon and evening from parts of the central and
northern Plains east-southeastward into the southern Great Lakes
region.

...Central and Northern Plains/Mid Missouri Valley/Southern Great
Lakes...
At the surface, a cold front will advance southward into the
north-central states on Sunday, being positioned from South Dakota
eastward into Wisconsin by afternoon. Surface dewpoints near and to
the south of the front will be in the 60s and 70s F, which will
contribute to the development of moderate instability. Large-scale
ascent over this unstable airmass will remain relatively weak. In
spite of this, isolated thunderstorms are expected to form in areas
where low-level convergence becomes maximized. Model forecasts
suggest that the most favorable locations could be near the front in
South Dakota and from northeastern Nebraska into southern Iowa along
the northern edge of the stronger low-level flow. In both of these
locations, moderate to strong instability coupled with moderate
deep-layer shear should be sufficient for a severe threat. Severe
wind gusts will be the most likely hazard during the late afternoon
and early evening with cell clusters or short line segments that
move southeastward along and near the instability axis. Hail could
also occur mainly in the central and northern Plains, where
mid-level lapse rates will be steepest.

..Broyles.. 08/07/2026

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