Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed Jan 15 2025 19:19:24 ACUS03 KWNS 151919 SWODY3 SPC AC 151918 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0118 PM CST Wed Jan 15 2025 Valid 171200Z - 181200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... Isolated thunderstorms are possible during the evening and overnight hours across the Lower Mississippi and Tennessee Valleys and central Gulf Coast region Friday night and early Saturday morning. ....Synopsis... An upper trough extending from a low moving into/across western Ontario, will continue advancing southeastward across the Plains. This trough will begin to partially phase with a second trough shifting east across the Desert Southwest toward the southern Plains. In tandem with the Canadian upper low, a deep surface cyclone is forecast to cross Ontario, reaching the James Bay vicinity overnight. A strong/trailing surface cold front will advance across central portions of the U.S., reaching a position from the Upper Great Lakes south-southwestward to the Lower Mississippi Valley Saturday morning. ....Lower Mississippi/Tennessee Valleys to the Florida Panhandle... As a cold front shifts southeastward toward/into the Lower Mississippi and Tennessee Valleys late in the period, low-level theta-e advection atop a cool/stable boundary layer will lead to modest elevated destabilization. This will likely be sufficient to permit evolution of isolated thunderstorms, within a broader/developing area of convection. At this time, with the stable boundary layer precluding appreciable surface-based storm potential, and modest CAPE above, it appears that storms will remain weak/disorganized, and thus sub-severe, despite an otherwise favorable kinematic environment. ...Goss.. 01/15/2025 $$ = = = 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) .