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Weather conditions on bar directly above are near Lakefront. Tabs under Moon Phases refer to O'Hare (official).

Archives for SPC Convective outlook are updated daily with a live map a the beginning of the article. Touch or click map to get possible update, and follow link at end of article for referral to NOAA/NWS Storm Prediction Center. Archives for Chicago's hourly weather data were updated 24-48 hours after end of each day prior to Dec. 2020.

Saturday, December 25, 2021

SPC Dec 25, 2021 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1025 AM CST Sat Dec 25 2021 Valid 251630Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms will be possible along the Pacific Coast. ...West Coast... Quiet convective weather is expected over most of the nation today, with the exception of the West Coast. Strong onshore flow ahead of an approaching upper trough will promote isolated thunderstorms in coastal areas of WA/OR into northern and central CA. A few of the thunderstorms may spread into the CA central valley this afternoon/evening, where small hail may accompany the stronger cells. No organized severe storms are anticipated. ...Ohio Valley... Isolated thunderstorms have been occurring over the OH valley this morning. This risk of further lightning flashes will diminish rapidly early this afternoon as the associated shortwave trough moves eastward and away from the region. Will leave a small area of 10% coverage for a few more hours. ..Hart/Goss.. 12/25/2021 Read more LIVE: spc.noaa.gov
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