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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)
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Friday, February 28, 2025

SPC Feb 28, 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
0153 PM CST Fri Feb 28 2025

Valid 282000Z - 011200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are unlikely through tonight.

...20z Update...
No adjustments are needed as latest observations and short-term
guidance suggest that thunderstorm potential will remain negligible
over the CONUS through tonight.

..Guyer.. 02/28/2025

.PREV DISCUSSION... /ISSUED 1015 AM CST Fri Feb 28 2025/

...Synopsis and Discussion...
An upper trough over Ontario and the Upper Midwest is forecast to
further amplify today as it eventually encompasses much of the
eastern CONUS. With a surface cold front having cleared the
Gulf/Atlantic Coasts, dry and/or stable conditions are likely to
preclude thunderstorms across the central/eastern CONUS through
tonight. Farther west, a closed upper low will approach coastal
southern CA through the period. While showers may occur across parts
of this region as the upper low approaches, thermodynamic profiles
are forecast to remain generally unfavorable for lightning
production.


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