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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)

Thursday, October 2, 2025

SPC Oct 2, 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
0255 PM CDT Thu Oct 02 2025

Valid 022000Z - 031200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected across the continental U.S.
today or tonight.

...20Z Update...
The forecast remains on track, and minimal changes were made with
this update. See the previous discussion below for details.

..Weinman.. 10/02/2025

.PREV DISCUSSION... /ISSUED 1130 AM CDT Thu Oct 02 2025/

...Discussion...
An upper trough will continue to amplify and build southward along
the West Coast, with preceding height falls over the Great Basin and
northern Intermountain West. Sufficient moisture will exist ahead of
a cold front, with marginal buoyancy supportive of isolated
thunderstorms later today and especially into tonight from the
Sierra and Great Basin toward the northern Rockies. A couple of
stronger storms could materialize, but severe storms are not
expected. Elsewhere, thunderstorms will also be possible across the
Upper Midwest and Lake Superior vicinity, in addition to Florida and
the Lower/Middle Mississippi Valley.


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