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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)

Sunday, February 1, 2026

SPC Feb 1, 2026 1300 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0638 AM CST Sun Feb 01 2026

Valid 011300Z - 021200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorm potential appears low today and tonight.

An upper trough will rotate inland across the WA/OR Cascades this
afternoon, accompanied by cold temperatures aloft and strong onshore
flow. Scattered showers are expected across western WA, where very
weak CAPE will develop. While the risk of thunderstorms is low, an
isolated flash or two cannot be ruled out.

Elsewhere, dry and stable conditions will preclude thunderstorms
across the CONUS today.

..Hart/Broyles.. 02/01/2026


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