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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, May 23, 2021

SPC May 24, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0748 PM CDT Sun May 23 2021 Valid 240100Z - 241200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM WESTERN NEBRASKA THROUGH WESTERN SOUTH DAKOTA... ...SUMMARY... Scattered thunderstorms capable of damaging wind, large hail, and a couple of tornadoes will persist mainly over portions of the central through northern Plains this evening. ...Central through northern Plains... A line of storms with a few embedded bowing segments and supercells extends from southwest ND through western SD into western NE. The downstream warm sector remains moderately unstable with a corridor of 1000-1500 J/kg MLCAPE as sampled by the 00Z North Platte RAOB. A mid-level jet pivoting through the base of an ejecting shortwave trough will maintain favorable vertical wind profiles for organized storms this evening with 40-50 kt effective bulk shear. While convective inhibition will undergo some increase as the boundary layer begins to cool, a strengthening southerly low-level jet should help sustain a forward propagating line of storms before activity begins to weaken toward late evening. Damaging wind and large hail are the primary threats, but a couple of tornadoes remain possible, mainly through about 03Z before the surface layer begins to decouple. ..Dial.. 05/24/2021 Read more LIVE: spc.noaa.gov
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