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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).

Sunday, October 31, 2021

SPC Oct 31, 2021 2000 UTC Day 1 Convective Outlook

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0246 PM CDT Sun Oct 31 2021 Valid 312000Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No severe thunderstorms are expected across the continental United States today and tonight. ...20z Update... The previous outlooks remains unchanged with the 20z update. Isolated thunderstorms have been noted across southern ID this afternoon. Additional isolated thunderstorms remain possible southeastward into northern UT/CO and southwest WY. ..Leitman.. 10/31/2021 .PREV DISCUSSION... /ISSUED 1055 AM CDT Sun Oct 31 2021/ ...ID/WY/UT/CO... Morning water vapor imagery shows an upper low over OR, with a series of shortwave troughs tracking around the base of the low from northern CA into the Great Basin. These features, along with cold temperatures aloft and some daytime heating, will promote the risk of scattered showers and isolated thunderstorms through tonight over parts of southern ID into northern UT/CO and southwest WY. Elsewhere across the CONUS, organized thunderstorm activity is not anticipated. Read more LIVE: spc.noaa.gov
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