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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).

Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

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: