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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

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O'Hare International Airport KORD (Arlington Heights South)
Chicago Executive Airport KPWK (Arlington Heights North)

Sunday, August 31, 2025

SPC Aug 31, 2025 1300 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0749 AM CDT Sun Aug 31 2025

Valid 311300Z - 011200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Overall severe weather potential is expected to be low today and
tonight.

...Discussion...
Modest-strength mid-level northwesterly winds aloft will persist
over the Great Plains, to the east of the Rockies-centered upper
ridge and an upper low off the coastal Pacific Northwest. Weak
convergence/subtle surface troughing will be prevalent in
association with a persistently moist air mass across the southern
Plains. Although a few strong storms could occur across parts of
Kansas/Oklahoma into Texas this afternoon into evening, the
combination of only modest instability and relatively weak
deep-layer shear should limit the overall severe-weather potential.
A few strong storms could also develop across southwest New Mexico
and southeast Arizona later this afternoon into this evening, with
some stronger wind gusts a possibility.

..Guyer/Bentley.. 08/31/2025


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