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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 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0741 PM CDT Sat Aug 30 2025

Valid 310100Z - 311200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Strong thunderstorms will be possible across parts of the southern
and central Plains this evening, but the chance for severe is low.

...DISCUSSION...
Northwesterly mid-level flow is evident on water vapor imagery over
much of the central and southern U.S. At the surface, a moist
airmass is in place over the southern and central Plains, where
dewpoints are mostly in the upper 60s and lower 70s F. Scattered
thunderstorms are ongoing across much of this airmass. Due to
relatively weak instability and deep-layer shear, along with limited
large-scale ascent, any severe threat is expected to remain
extremely localized this evening. Elsewhere across the continental
U.S., no severe threat is expected this evening into tonight.

..Broyles.. 08/31/2025


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SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)