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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, December 3, 2025

SPC Dec 4, 2025 0100 UTC Day 1 Convective Outlook

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


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0650 PM CST Wed Dec 03 2025

Valid 040100Z - 041200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
UPPER TEXAS AND SOUTHWEST LOUISIANA COASTS...

...SUMMARY...
A storm with isolated severe hail will be possible tonight along the
upper Texas and southwest Louisiana coasts.

...Upper Texas and Southwest Louisiana Coasts...
Water vapor imagery shows a trough over the Desert Southwest with
west-southwesterly flow located across much of the southern U.S. At
the surface, a moist airmass is located over much of the western
Gulf. The northern edge of the moist airmass impinges the middle
Texas Coast, and model forecasts suggest that the airmass will
gradually shift northeastward along the upper Texas into far
southwest Louisiana. Although warm-advection-related thunderstorms
will be mostly concentrated offshore, an isolated strong storm with
hail potential could develop in far southeast Texas or far southwest
Louisiana from late evening into the overnight period.

..Broyles.. 12/04/2025


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