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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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Friday, December 12, 2025

SPC Dec 12, 2025 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1152 PM CST Thu Dec 11 2025

Valid 121200Z - 131200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the U.S. today or tonight.

...DISCUSSION...
Mid-level northwesterly flow will remain in place across most of the
U.S. today and tonight, as a trough moves southeastward into the
Great Lakes region. At the surface, a cold front will move southward
into the south-central U.S., as a cold airmass moves into the
northern states. Overall, conditions will remain dry over most of
the nation today and tonight, eliminating any chance for
thunderstorms.

..Broyles.. 12/12/2025


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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)