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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, January 23, 2025

SPC Jan 23, 2025 2000 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0148 PM CST Thu Jan 23 2025

Valid 232000Z - 241200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the continental U.S. through
the remainder of today or into tonight.

...20z Update...
No changes were made to the prior outlook. Broad high pressure over
the central US will continue to favor cool, dry and stable
conditions behind a cold front. This will negate thunderstorm
potential. See the prior outlook for more info.

..Lyons.. 01/23/2025

.PREV DISCUSSION... /ISSUED 1013 AM CST Thu Jan 23 2025/

...Synopsis...
A shortwave trough currently moving through NM is forecast to
continue east-southeastward across the southern Plains today,
helping to induce an eastward shift in the mean upper troughing
across the central and eastern CONUS. As it does, another surge of
cold and dry continental air is anticipated across the Plains and MS
Valley, with associated high surface pressure contributing to
continued offshore flow. High surface pressure will remain over the
western CONUS as well. Resulting dearth of low-level moisture will
preclude thunderstorm development.


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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)