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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.

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

Thursday, December 12, 2024

SPC Dec 12, 2024 1630 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1016 AM CST Thu Dec 12 2024

Valid 121630Z - 131200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Lightning is possible this evening and tonight along the eastern
shores of Lake Ontario in association with lake-effect snow bands.

...NY...
Cool/dry and stable conditions will prevail over the most of the
CONUS today, with no organized thunderstorm activity expected. One
exception will be in the vicinity of the eastern shores of Lake
Ontario (Jefferson/Lewis/Oswego counties). A long-fetch lake-effect
snow band is forecast to develop later this evening and tonight.
Forecast soundings suggest a sufficiently deep convective layer to
promote charge separation and a few lightning strikes - mainly after
02z.

..Hart.. 12/12/2024


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CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)