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Archives for Chicago's hourly weather data updated 24-48 hours after end of each day. MOBILE CHGOWX.COM ...
Weather conditions on bar directly above are near Lakefront. Weather conditions with Moon are O'Hare (official).

Tuesday, September 21, 2021

SPC Sep 21, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0753 PM CDT Mon Sep 20 2021 Valid 210100Z - 211200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM CENTRAL WISCONSIN SOUTH-SOUTHWESTWARD TO CENTRAL MISSOURI... ...SUMMARY... A couple of severe thunderstorms -- capable of producing locally damaging wind gusts and hail -- will continue through mid evening across parts of the Upper Mississippi Valley southward to central Missouri. ...Discussion... A semi-continuous line of thunderstorms is ongoing at this time from western Lake Superior south-southwestward to far southeastern Kansas, near the advancing cold front. While this band of storms is expected to continue through the overnight hours, limited instability -- diminishing gradually with the loss of daytime heating -- is indicated across most of the region. As such, severe-weather potential is also expected to continue to gradually wane through the evening hours. In the mean time however, will maintain a narrow corridor of SLGT risk, from central Wisconsin to central Missouri, to reflect the zone of greatest potential for damaging winds and/or hail. ..Goss.. 09/21/2021 Read more LIVE: spc.noaa.gov
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