LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0753 PM CDT Thu Mar 12 2026
Valid 130100Z - 131200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not forecast tonight.
...01z Update...
Thunderstorm potential is diminishing quickly across the FL
Peninsula early this evening. Boundary layer cooling will lead to
weaker buoyancy over the next few hours and poor lapse rates do not
appear particularly favorable for robust deep convection. Latest
radar data exhibits shallow convection along the front, but only a
few flashes of lightning remain with this activity.
Across the upper MS Valley, exit region of strong midlevel jet will
support weak elevated convection from eastern ND across MN into
western WI tonight. Warm advection and steep lapse rates should aid
the potential for at least a few flashes of lightning within the
stronger updrafts. Even so, thunderstorms will remain quite
isolated.
..Darrow.. 03/13/2026
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TRSVdD
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)
Thursday, March 12, 2026
SPC Mar 13, 2026 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)




















