LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
0221 PM CST Sat Feb 21 2026
Valid 212000Z - 221200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND EVENING ACROSS PARTS OF THE SOUTHEAST STATES...
CORRECTED FOR GENERAL THUNDERSTORM LINE ERROR
...SUMMARY...
Isolated strong/severe thunderstorms remain possible across parts of
the Southeast this afternoon and evening.
...Southeast States...
Other than trimming risk areas behind the sagging cold front, no
important changes have been made to the ongoing forecast.
..Hart.. 02/21/2026
.PREV DISCUSSION... /ISSUED 1011 AM CST Sat Feb 21 2026/
...Southeast States...
A well-defined surface baroclinic zone extends from southern LA/MS
east-northeastward into parts of AL/GA/SC today. To the south of
the boundary, a rather warm/moist and unstable air mass is present
with dewpoints in the upper 60s and afternoon MLCAPE values of
1000-1500 J/kg. This will lead to occasional thunderstorms along
the boundary through the day and into the evening. Low-level winds
are veered, limiting convergence and vertical shear. However,
occasional small bowing structures will be possible today capable of
gusty or locally damaging wind gusts. Also, modest mid-level lapse
rates and cool temperatures aloft might result in a report or two of
hail. Refer to MCD #110 for further short-term details.
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TR5MQk
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)
Saturday, February 21, 2026
SPC Feb 21, 2026 2000 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)




















