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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).

Wednesday, November 17, 2021

SPC Nov 17, 2021 1730 UTC Day 2 Convective Outlook

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1129 AM CST Wed Nov 17 2021 Valid 181200Z - 191200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not forecast across the contiguous United States on Thursday. ...Discussion... An upper trough crossing the Great Lakes/Upper Midwest/Southern Plains Thursday morning will continue its eastward advance, reaching the Northeast/Mid-Atlantic region overnight. In its wake, westerly/zonal flow will expand across much of the country. At the surface, a cold front associated with the upper system should extend from the Lower Great Lakes region southwestward to the lower Mississippi Valley area initially. The front will then progress steadily eastward, clearing the entirety of the U.S. with the exception of central/southern Florida by the end of the period. As the front advances, very weak pre-frontal instability will promote areas of showers, and locally some thunderstorm activity as well. A few thunderstorms will be possible during the first half of the period across portions of the lower Mississippi Valley/central Gulf Coast area and into deep south Texas, and also increasingly across the eastern Carolinas area and parts of Florida later on as the front approaches. In all areas, severe weather is not expected. ..Goss.. 11/17/2021 Read more LIVE: spc.noaa.gov
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