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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 18, 2021

SPC Nov 18, 2021 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1026 AM CST Thu Nov 18 2021 Valid 181630Z - 191200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk of severe thunderstorms appears negligible across the U.S. today through tonight. A relatively strong cold front is sagging southward across parts of TX/LA/MS today, with widely scattered pockets of showers and thunderstorms noted across the region. Forcing for ascent will continue to weaken along the front this afternoon, with coverage of convection becoming more sparse through the day. An area of ongoing showers and thunderstorms over deep south TX will build southward and out of the area by late this afternoon, ending the risk of thunderstorms. Widespread rain with embedded thunderstorms will persist over south FL and adjacent offshore areas through the day. Isolated thunderstorms may develop northward along the FL east coast this afternoon where weak daytime heating will occur. No severe storms are expected. Isolated showers and a few thunderstorms are possible this afternoon and tonight along the coast of GA/SC/NC, but most convection is expected to remain offshore. ..Hart.. 11/18/2021 Read more LIVE: spc.noaa.gov
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