Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Tue Jun 10 2025 05:43:20 ACUS02 KWNS 100543 SWODY2 SPC AC 100541 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1241 AM CDT Tue Jun 10 2025 Valid 111200Z - 121200Z ....THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE NORTHERN ROCKIES...TEXAS...AND ACROSS IOWA AND VICINITY... ....SUMMARY... Isolated severe thunderstorms are possible Wednesday over parts of the Northwest and Intermountain West, the Corn Belt, and Texas. ....Synopsis and Discussion... On Wednesday, modest westerly flow aloft will stretch from CA into the northern Plains, and from the Great Lakes into the Northeast. Meanwhile, a weak upper wave will remain nearly stationary over the southern Plains providing cool temperatures aloft. An embedded wave will move quickly across southern ID and into the northern High Plains into Thursday morning, and will interact with a developing lee trough during the afternoon. Low-level moisture will be plentiful across the central and southern Plains, and especially from TX eastward across the Gulf Coast with 70s F dewpoints. A moist air mass will also exist across the Carolinas, supporting daytime instability but well south of the upper trough. ....Northern Rockies... Storms will develop relatively early in the day from eastern OR across ID as the shortwave trough moves over the area. Scattered storms will develop and spread quickly eastward into parts of WY and MT, with areas of strong outflow expected. Scattered severe gusts may occur. Overall deep-layer shear appears most favorable from southern ID into western WY, resulting in a few cells capable of hail as well as strong gusts. ....Central to southern TX... Moderate instability will develop over much of central into eastern and southern TX with a moist surface air mass beneath seasonably cool midlevel temperatures. Little in the way of a focus will exist except for possible antecedent outflows from early storms over North TX. However, lack of any capping and diurnal considerations will lead to scattered storms, with some clusters producing locally strong wind or isolated hail during the day. ....IA...northern IL and parts of surrounding states... A stationary front will exist across this region, with strong heating aiding destabilization. The glancing upper trough may aid lift, and forecast soundings show light but veering winds with height and marginal deep-layer shear. Scattered storms producing hail appear most probable during the late afternoon and evening, progressing eastward out of IA and into IL/WI and perhaps southern Lake MI late. ...Jewell.. 06/10/2025 $$ = = = 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) .