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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 4, 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
1149 PM CST Wed Dec 03 2025

Valid 041200Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe storms are not forecast in the U.S. today or tonight.

...DISCUSSION...
Across the U.S. today, mid-level flow will remain northwesterly in
the western states as a trough moves through the Great Plains.
West-southwesterly flow aloft will be in place across the Southeast.
At the surface, a moist airmass will be located over the western and
central Gulf. Isolated to scattered thunderstorms will be possible
along the northern edge of the moist airmass along parts of the
western and central Gulf Coast, and further north into the lower
Sabine and lower Mississippi River Valleys. Low-level moisture and
instability is expected to be insufficient for severe storms.
Elsewhere across the continental U.S., thunderstorms are not
forecast today or tonight.

..Broyles/Weinman.. 12/04/2025


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CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)