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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)

Wednesday, March 25, 2026

SPC Mar 25, 2026 1630 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1050 AM CDT Wed Mar 25 2026

Valid 251630Z - 261200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Organized severe thunderstorms appear unlikely through tonight.

...Synopsis...
Relatively dry and stable conditions will be present over most of
the CONUS today, but with several small areas of some concern for
thunderstorms. These include the Pacific Northwest, Northern
Plains, Mid/Upper MS Valley, and FL.

...Florida...
A weak surface front lies across the central FL peninsula, with
strong heating and dewpoints in the 60s leading to moderate
afternoon CAPE. Similar to yesterday, scattered thunderstorms are
expected along the east-coast sea-breeze and along/south of the
front. Winds aloft are weak, but cool temperatures aloft could be
sufficient for a strong storm or two capable of hail or gusty wind.
The overall threat appears too low to warrant severe probabilities
at this time.

...IL/IN...
Visible satellite imagery shows a zone of weak low-level warm
advection over IA, spreading eastward into IL. Several model
solutions suggest the risk of some lightning activity this afternoon
in this region, although it appears to be rooted in the mid-levels
and unlikely to produce any severe risk. After dark, more active
thunderstorms may develop over eastern IL and much of IN, but weak
instability will continue to limit any organized severe threat.

..Hart/Weinman.. 03/25/2026


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