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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.

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

Tuesday, December 30, 2025

SPC Dec 30, 2025 2000 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0123 PM CST Tue Dec 30 2025

Valid 302000Z - 311200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast through tonight.

...Synopsis...

No changes are needed with the 20z Day 1 Update. Thunderstorm
activity is not expected through tonight/early Wednesday.

..Leitman.. 12/30/2025

.PREV DISCUSSION... /ISSUED 1000 AM CST Tue Dec 30 2025/

...Synopsis and Discussion...
With cool/stable conditions prevalent behind a cold front across a
large portion of the CONUS, thunderstorms are not forecast today.


Read more CHECK UPDATE ZOOM GRAPHIC


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