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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).

Saturday, September 4, 2021

SPC Sep 5, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0756 PM CDT Sat Sep 04 2021 Valid 050100Z - 051200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS SANDHILLS OF NEBRASKA... ...SUMMARY... A localized risk for hail may accompany a thunderstorm or two in central Nebraska during the overnight. ...Synopsis... A cold front will continue to progress southeast across OK and the Ozarks region this evening. Widely scattered thunderstorms near the front will progress east-southeast within a moist boundary layer. Although a strong gust may occur with a couple of the stronger cores, the gradual reduction in buoyancy due to the loss of heating will lead to storms diminishing in coverage/intensity by later this evening. Farther north over NE, isolated thunderstorms are forecast late tonight as a mid-level shortwave trough --evident this evening in water vapor imagery over northern WY-- moves into the north-central Great Plains. Strengthening large-scale ascent and steep mid-level lapse rates will favor storms developing primarily after 09z. A localized risk for large hail may occur with the strongest updrafts. ..Smith.. 09/05/2021 Read more LIVE: spc.noaa.gov
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