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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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Thursday, December 4, 2025

SPC Dec 5, 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
0633 PM CST Thu Dec 04 2025

Valid 050100Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A few thunderstorms are expected near/along the northern Gulf Coast
tonight.

...01z Update...

Low-amplitude short-wave trough is advancing east-northeast across
the lower MS Valley early this evening. A corridor of weak
convection is noted ahead of this feature from southeast LA into
southwest AL. The deepest, more robust updrafts over southeast LA
are generating a few flashes of lightning. Surface-based buoyancy is
not expected to materialize inland through sunrise, and any
thunderstorm activity near the Gulf Coast will be driven in large
part by warm advection, and should remain elevated. Midlevel
instability appears too weak to warrant any meaningful risk for
severe.

..Darrow.. 12/05/2025


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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)