LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1151 PM CST Tue Dec 02 2025
Valid 031200Z - 041200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms will be possible this evening into tonight across the
western Gulf Coast states. Severe storms are not expected.
...DISCUSSION...
At mid-levels today, a trough will dig south-southeastward into the
Desert Southwest, as flow becomes west-southwesterly across much of
the southern U.S. In response, moisture advection will take place
across the western Gulf Coast states. By mid to late evening,
surface dewpoints are expected to reach the middle to upper 60s F
along parts of the Texas Coast. This will result in an increase in
instability supporting isolated to scattered thunderstorm
development. As warm advection continues into the overnight period,
a gradual increase in convective coverage should occur, mainly
offshore where instability and low-level flow are forecast to be
stronger. Due to this, some cell organization could occur just
offshore from the upper Texas Coast after midnight with a few
rotating storms possible. Over land, instability is forecast to
remain relatively weak, which is expected to limit the severe
potential through daybreak on Thursday.
..Broyles/Weinman.. 12/03/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPbphm
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)
Wednesday, December 3, 2025
SPC Dec 3, 2025 0600 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)




















