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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)

Friday, October 2, 2026

SPC Oct 3, 2026 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0744 PM CDT Fri Oct 02 2026

Valid 030100Z - 031200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorm potential should remain low through the night.

... 01 UTC Update ...

Showers and the occasional thunderstorm will continue along and
southeast of a slow moving frontal zone draped from the southern
Plains northeast toward the Mid-Atlantic. Instability is rather
limited to the south of this front owing to poor lapse-rates, and
vertical shear is weak. Thus, while the occasional thunderstorm may
occur, the severe potential is low.

Elsewhere, a couple of lightning strikes may occur toward sunrise
across the north-central US. Here, a short-wave trough moving
through the stronger mid-level flow will overhead, bringing with it
modest large-scale ascent. Temperatures in the 40Fs to low 50Fs with
dewpoints in the 40Fs should limit instability and the overall
potential for more widespread thunderstorm coverage.

..Marsh.. 10/03/2026


Read more CHECK UPDATE ZOOM GRAPHIC


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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)