Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Sun Jun 01 2025 07:28:19 ACUS03 KWNS 010727 SWODY3 SPC AC 010726 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0226 AM CDT Sun Jun 01 2025 Valid 031200Z - 041200Z ....THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NORTH TX TO SOUTH WI... ....SUMMARY... Scattered severe thunderstorms are possible from the southern Great Plains to the Midwest, mainly from midday to early evening Tuesday. ....Southern Great Plains to the Upper Great Lakes... A low-amplitude southern-stream shortwave impulse should begin phasing with a northern-stream shortwave trough in the Upper Midwest/Great Lakes vicinity. This process will aid in strengthening mid-level southwesterlies across part of the warm-moist sector, roughly from the IA/IL border area northward. The accompanying surface low over KS should similarly track northeastward along an eastward-moving cold front, with the trailing portion sagging southeastward in TX. A strong and broad low-level jet on D2 will aid in rich moisture return ahead of the surface front into at least WI. Areas of convection will likely be ongoing at Tuesday morning within the attendant warm conveyor and a favorably diffluent upper-flow regime. Mid-level lapse rates will largely be weak, owing to both preceding convection and relatively warm 500-mb temperatures attendant to the southern-stream impulse. Guidance consensus suggests that appreciable boundary-layer heating may be limited within the more narrow portion of the rich moisture plume, where strong southwesterlies are expected through much of the troposphere. This lowers confidence on the northern extent of the level 2-SLGT risk. Robust boundary-layer heating is most likely to occur across the TX portion of the warm-moist sector. Despite the warm mid-levels probably yielding only moderate buoyancy, a more westerly wind profile in the mid/upper-levels suggests slow-moving supercells/clusters are possible in north TX to central/eastern OK, especially later into the afternoon. ...Grams.. 06/01/2025 $$ = = = 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) .