LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0651 AM CST Mon Feb 23 2026
Valid 231300Z - 241200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are not expected today or tonight.
...Discussion...
Convective potential will be virtually nil today. While isolated
lightning flashes were noted overnight east of Long Island and near
coastal southern New England, lightning-conducive thermodynamic
profiles, in the northwest quadrant of the deep offshore cyclone,
will continue to quickly diminish and shift away from the coast. In
the Pacific Northwest, a few lightning flashes occurred overnight in
coastal Washington, and a sliver of weak buoyancy was observed in
the 12z UIL/Quillayute, WA sounding. However, a trend toward
shortwave ridging and less-lightning-conducive thermodynamic
profiles should effectively end such thunderstorm potential.
..Guyer/Grams.. 02/23/2026
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Windy.com Temps | Gusts | WU KORD KPWK |
CLICK for this month's BIG night sky ... | RADAR FULL MAP SCREEN |
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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).
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.
CONVECTIVE | TORNADO | WIND | HAIL
O'Hare International Airport KORD
(Arlington Heights South)
Chicago Executive Airport KPWK
(Arlington Heights North)
Monday, February 23, 2026
SPC Feb 23, 2026 1300 UTC Day 1 Convective Outlook
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)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)




















