Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed May 28 2025 06:00:43 ACUS02 KWNS 280600 SWODY2 SPC AC 280559 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1259 AM CDT Wed May 28 2025 Valid 291200Z - 301200Z ....THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHERN HIGH PLAINS...AND SOUTHEAST... ....SUMMARY... A marginal severe threat is expected on Thursday from parts of the southern High Plains into the Southeast. ....Southern High Plains... A mid-level ridge will take shape on Thursday across the Rockies, as a short-wave trough moves southeastward through the central states. At the surface, a corridor of low-level moisture will be oriented from the southern High Plains north-northwestward into the southern Rockies. An axis of instability is forecast to develop along this corridor by afternoon. Thunderstorms will likely develop in the higher terrain and gradually spread eastward into the southern High Plains. Steep lapse rates and sufficient deep-layer shear could be enough for an isolated threat for hail and severe gusts. ....Southeast... A mid-level short-wave trough will move southeastward through the central states on Thursday. At the surface, a moist and unstable airmass will remain over the Gulf Coast states. Moderate destabilization is expected across parts of this airmass by afternoon. Although large-scale ascent will be relatively weak, isolated to scattered thunderstorms will likely form in areas that have locally maximized low-level convergence. The greatest convective coverage may occur from the lower Mississippi Valley to the central Gulf Coast, where low-level flow is forecast to be stronger. A marginal severe threat will be possible in the afternoon and evening, in areas where low-level lapse rates become the steepest. ...Broyles.. 05/28/2025 $$ = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.20-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .