LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0656 PM CST Mon Dec 15 2025
Valid 160100Z - 161200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are not forecast tonight.
...Pacific Northwest...
Thunderstorms earlier this afternoon over southwest OR have fully
decayed in the past couple hours. A lone storm or two will be
possible tonight within the persistent, but modest low-level warm
conveyor that will shift farther inland to the northern Rockies.
With flimsy elevated buoyancy expected (MUCAPE at or below 100
J/kg), overall thunderstorm probabilities appear negligible.
A few lightning flashes were also detected in the last hour across
northwest WA near a shortwave trough, that will rapidly progress
east across far southern AB/SK tonight. This thunder threat is
expected to remain very isolated and diminish east of the Cascades.
..Grams.. 12/16/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TPr8s0
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)
Monday, December 15, 2025
SPC Dec 16, 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)




















