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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.

Thursday, November 25, 2021

SPC Nov 25, 2021 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0331 AM CST Thu Nov 25 2021 Valid 281200Z - 031200Z ...DISCUSSION... A pair of shortwave troughs, one over the Upper OH Valley and one entering the Lower MS Valley, are expected to progress eastward within the cyclonic flow aloft anticipated to be in place across the eastern CONUS on D4/Sunday. These shortwaves should move off the East Coast by early D5/Monday morning, with an expansive belt of northwest flow aloft in their wake extending from the Pacific Northwest to off the Mid-Atlantic/Southeast coast. A series of shortwave troughs is forecast to move through this flow aloft, helping to reinforce the dry/stable conditions east of the Rockies. This overall pattern evolution is expected to result in a very low potential for severe thunderstorms. Read more LIVE: spc.noaa.gov
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