LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0654 AM CST Wed Feb 25 2026
Valid 251300Z - 261200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Organized severe thunderstorms are not expected today or tonight.
...Discussion...
West-northwesterly winds aloft will be prevalent across the majority
of the CONUS through tonight, broadly sandwiched between an
anticyclone near Baja and an upper trough centered near Hudson Bay.
An embedded/modestly amplifying shortwave trough over the northern
High Plains, and diurnal heating/steepening lapse rates, will
influence isolated thunderstorm potential this afternoon across
higher terrain of Wyoming/Colorado into the central High Plains. A
few convectively influenced stronger wind gusts could occur this
afternoon through around sunset within a well-mixed boundary-layer
environment, but severe thunderstorms currently seem unlikely.
Thunderstorm potential will otherwise develop east-southeastward
toward the Ozarks/Mid-South/Tennessee Valley tonight as warm/moist
advection interfaces with a southward-spreading front, with weak
buoyancy expected to limit hail potential with this mostly elevated
convection.
..Guyer/Grams.. 02/25/2026
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TR8sQf
Windy.com Temps | Gusts | WU KORD KPWK |
CLICK for this month's BIG night sky ... | RADAR FULL MAP SCREEN |
|---|
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)
Wednesday, February 25, 2026
SPC Feb 25, 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)




















