Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed Feb 28 2024 17:21:50 ACUS02 KWNS 281721 SWODY2 SPC AC 281720 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1120 AM CST Wed Feb 28 2024 Valid 291200Z - 011200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... Severe thunderstorms are not expected on Thursday. ....Synopsis... In the wake of Wednesday's frontal passage, a dry continental air mass will be in place east of the Rockies, with any notable low-level moisture confined the Gulf of Mexico. Even so, mid-level moisture and ascent attendant to a southern-stream shortwave trough forecast to progress across the southern Plains may support a few thunderstorms across north/central TX during the afternoon and evening. Higher thunderstorm coverage is anticipated later in the period from southeast TX into the Lower MS Valley, where more mid-level moisture will promote elevated buoyancy and greater storm depth. Limited buoyancy should keep the severe thunderstorm potential very low. Farther west, upper troughing is expected to gradually spread eastward across the Pacific Northwest throughout the day. An embedded shortwave is forecast to progress through this troughing, reaching the Pacific Northwest coast by Thursday afternoon before continuing northeastward across the interior Pacific Northwest and northern Rockies Thursday night into Friday morning. Some deeper convective cores are possible within the frontal band associated with this shortwave, but the general expectation for these cores to remain too shallow for lightning production. Mid-level temperatures will continue to cool in the wake of this wave, dropping below -30 deg C at 500-mb by late Thursday afternoon. Low to mid-level moisture will remain rather scant, but this cooling aloft should still result in the development of minimal buoyancy along the coast. Greater storm depth should result, which should contribute to more thunderstorms and higher overall thunderstorm coverage. ...Mosier.. 02/28/2024 $$ = = = 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 3.14-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .