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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).

Thursday, June 24, 2021

SPC Jun 24, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook CORR 1 NWS Storm Prediction Center Norman OK 0824 PM CDT Wed Jun 23 2021 Valid 240100Z - 241200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS OVER A PORTION OF CENTRAL AND EASTERN NEBRASKA... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER A PORTION OF THE CENTRAL PLAINS AND UPPER MIDWEST... CORRECTED FOR MARGINAL RISK GRAPHIC IN SD ...SUMMARY... Severe storms remain possible tonight across parts of the central Plains and Upper Midwest. Damaging winds and large hail will be the main threats. ...Central Plains region... Tendency has been for storms that developed earlier during the late afternoon to undergo a temporary weakening trend. The 00Z RAOB data from Omaha and North Platte indicate a strong capping inversion associated with warm air at the base of an elevated mixed layer. This suggests that stronger forcing will be needed to sustain organized convection into the overnight hours. A southerly nocturnal low-level jet will strengthen to in excess of 45 kt this evening. Meanwhile weak perturbations will move through the northern periphery of an upper ridge situated over the central Plains. Cold pools associated with high based convection currently moving east out of western NE will interact with the strengthening low-level jet, and this may provide the forcing needed to reinvigorate storms during the evening. Given very steep lapse rates and strong instability in place, the potential still exists for storms to organize into an MCS and produce significant wind gusts. ..Dial.. 06/24/2021 Read more LIVE: spc.noaa.gov
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