LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0645 PM CST Thu Nov 27 2025
Valid 280100Z - 281200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
The risk for thunderstorms appears negligible across much of the
nation tonight.
...01Z Update...
Drying and stabilizing trends are now well underway across
southeastern Florida coastal areas and the Keys, where
lower/mid-tropospheric wind fields have veered to northwesterly.
Some lightning was noted earlier in a convective band within
west-southwesterly low-level flow emanating from Lake Ontario, where
trajectories across the relatively warm lake waters are maximized.
Additional convection occasionally becoming capable of producing
lightning appears possible to the east of Lake Ontario through at
least 05-06Z, before this potential becomes more negligible as mean
lower/mid-tropospheric winds begin to veer to a more
westerly/northwesterly component.
..Kerr.. 11/28/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPVxqx
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)
Thursday, November 27, 2025
SPC Nov 28, 2025 0100 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)




















