Subj : DAY1SVR: Day 1 Convective Outlook To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Thu May 01 2025 16:10:57 ACUS01 KWNS 011610 SWODY1 SPC AC 011609 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1109 AM CDT Thu May 01 2025 Valid 011630Z - 021200Z ....THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE LOWER MS VALLEY THROUGH THE TN AND OH VALLEYS INTO THE LOWER GREAT LAKES...AND FROM THE TX/OK PAHANDLES EASTWARD ACROSS OK AND NORTH AND CENTRAL TX.... ....SUMMARY... Lines and/or clusters of strong to severe thunderstorms are likely to impact parts of the Ohio Valley into lower Great Lakes, parts of the lower Mississippi Valley, and the southern Great Plains this afternoon through tonight. ....OH Valley... Morning water vapor imagery shows a progressive and large shortwave trough moving across parts of MO/IL. Forcing ahead of this trough will lead to scattered thunderstorm development over eastern IN and central KY, with storms spreading northeastward through the afternoon and early evening. Forecast soundings show deep and moderately strong southwest flow aloft. This coupled with sufficient CAPE will pose a threat of organized lines/clusters of storms capable of damaging wind gusts. Activity is expected to spread into western NY/PA during the early evening before weakening. ....Central TX... A weak surface boundary extends from west-central LA westward into central TX this morning. Strong heating and ample moisture along/south of the boundary will yield max CAPE values over 4000 J/kg by late afternoon. Most 12z CAM solutions indicate at least isolated intense convection forming in this corridor. Those storms that form will pose a risk of very large hail and damaging winds. Other intense storms may form off the high terrain of northern Mexico and build into parts of central TX this evening. ....TX Panhandle into OK... A combination of strong heating and upslope low-level winds into the Raton mesa will aid in the development of a cluster of thunderstorms over southeast CO this afternoon. This activity will track southeastward into a progressively more moist/unstable air mass over the TX panhandle and western OK, where a few more intense storms are expected. Cells and bowing structures will pose a risk of large hail and damaging winds. By late tonight, other storms are expected to form ahead of this complex, affecting parts of central OK with a risk of large hail. ...Hart/Wendt.. 05/01/2025 $$ = = = 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) .