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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.

ARLINGTON HEIGHTS WEATHER
O'Hare International Airport KORD (Arlington Heights South)
Chicago Executive Airport KPWK (Arlington Heights North)

Wednesday, October 15, 2025

SPC Oct 16, 2025 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0742 PM CDT Wed Oct 15 2025

Valid 160100Z - 161200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE SOUTHERN/CENTRAL ROCKIES INTO THE ADJACENT HIGH PLAINS...

...SUMMARY...
Isolated strong to severe thunderstorms are possible tonight across
parts of the southern/central Rockies into the High Plains.
Occasional large hail and severe wind gusts may occur.

...01Z Update...

...Southern/Central Rockies into the central High Plains...
Scattered thunderstorms are ongoing across the region, downstream of
a deep upper low moving across the Great Basin. Despite the loss of
daytime heating and much of the surface-based buoyancy,
thunderstorms will likely persist throughout the evening and tonight
amid cool mid-level temperatures and related steep mid-level lapse
rates. Moderate vertical shear will persist throughout the evening
and overnight as well, with the resulting combination of buoyancy
and shear sufficient for a few supercells and an isolated severe
risk.

Additional information about this area is available in MCD #2148.

..Mosier.. 10/16/2025


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TNj151
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)