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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).

Monday, November 22, 2021

SPC Nov 22, 2021 2000 UTC Day 1 Convective Outlook

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0144 PM CST Mon Nov 22 2021 Valid 222000Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected across the contiguous United States today. ...20z Update... A few thunderstorms remain possible through early evening across southern Florida, and late tonight along coastal Washington/Oregon. No changes have een made from the previous outlook. ..Leitman.. 11/22/2021 .PREV DISCUSSION... /ISSUED 1023 AM CST Mon Nov 22 2021/ ...Synopsis/Discussion... A progressive yet amplified longwave pattern will prevail over the CONUS through tonight. Large-scale trough amplification will occur along/east of the Appalachians, while an additional shortwave trough amplifies as it approaches the coastal Pacific Northwest tonight. Some thunderstorms will remain a possibility across southern Florida and offshore waters today within the pre-frontal moist air mass. A few thunderstorms may also occur late tonight along coastal Washington/northwest Oregon as lapse rates steepen/minimal buoyancy develops in conjunction with the aforementioned shortwave trough. Read more LIVE: spc.noaa.gov
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