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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, November 20, 2021

SPC Nov 20, 2021 2000 UTC Day 1 Convective Outlook

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0128 PM CST Sat Nov 20 2021 Valid 202000Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast across the contiguous United States. The ongoing forecast remains valid, with no changes made. ..Hart.. 11/20/2021 .PREV DISCUSSION... /ISSUED 1025 AM CST Sat Nov 20 2021/ ...Florida... Near/south of a weakening front, scattered showers and isolated/occasional thunderstorms will remain possible this afternoon into tonight across the southern part of the Florida Peninsula and Keys vicinity. This will be supported by a moist and weakly capped air mass with thermodynamic profiles that are marginally conducive for charge separation/lightning flashes. Severe thunderstorms are not expected. Read more LIVE: spc.noaa.gov
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