Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Sat Jul 01 2023 07:31:57 ACUS03 KWNS 010731 SWODY3 SPC AC 010730 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CDT Sat Jul 01 2023 Valid 031200Z - 041200Z ....THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTH-CENTRAL U.S. AND NORTHERN INTERMOUNTAIN REGION...AND ACROSS PARTS OF THE SOUTHEAST AND EAST COAST AREA... ....SUMMARY... A few severe storms will be possible across portions of the north-central U.S. and into the northern Intermountain region Monday. Isolated severe weather is also possible from the East Coast westward across parts of the Southeast. ....Synopsis... A trough over the northeastern U.S. is forecast to drift very slowly eastward Monday, while the weakly cyclonic flow expands slowly southward and eastward across the northwestern and north-central CONUS. At the surface, a weak front will move eastward toward the East Coast and southward into the Tennessee Valley. Meanwhile, a second front will move eastward across the north-central U.S. while lingering east-to-west across the northern High Plains through the period. ....North-central U.S. and northern Intermountain Region... Diurnal heating along and ahead of the cold front lying across the north-central portion of the country will result in moderate destabilization -- sufficient to support scattered thunderstorm development. While stronger flow aloft will remain to the cool side of the surface front, shear will likely be sufficient -- especially westward into the High Plains -- to support a few stronger storms, and thus some potential for severe-caliber wind/hail. Convection is expected to persist through the evening and into the overnight hours, perhaps with an accompanying severe risk. ....East Coast, and Southeast... Daytime heating along a slowly advancing cold front will support moderate destabilization of the moist pre-frontal boundary layer, across much of the East Coast region and westward across the Southeast. This should support widespread, diurnal thunderstorm development across this region. With a belt of moderate flow forecast from roughly the central and southern Appalachians area eastward across the East Coast, locally stronger storms are expected to evolve, along with attendant risk for wind and/or hail reaching or exceeding severe levels. While storms across the Mid-Atlantic region and northward should shift offshore overnight, convection -- and limited severe risk -- may persist across portions of the Southeast through much of the period. ...Goss.. 07/01/2023 $$ = = = 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) .