Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Mon Sep 08 2025 19:14:13 ACUS03 KWNS 081914 SWODY3 SPC AC 081913 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0213 PM CDT Mon Sep 08 2025 Valid 101200Z - 111200Z ....NO SEVERE THUNDERSTORM AREAS FORECAST... ....SUMMARY... Scattered showers and thunderstorms are possible over parts of the Northwest, Northern Rockies and High Plains Wednesday. A stronger storm or two is possible, but severe potential is low. ....Synopsis... Long-wave troughing will deepen across the western US on Wednesday, with heights increasing in the central US ridge. A belt of enhanced southwesterly flow aloft will move across the Great Basin into Wyoming and Montana through the period. Widely scattered thunderstorm development is expected across the Pacific Northwest into the northern Rockies and central/northern Plains. Additional thunderstorms will be possible along the Gulf Coast. ....Northern and Central High Plains... As southwesterly flow overspreads the northern Rockies, a surface low is progged to develop across eastern Montana. Moisture transport will increase with mass response with dew points in the low to mid 60s spreading across the Dakotas into eastern Montana. Owing to the strengthening ridge, mostly sunny skies are progged across much of the central/high plains. This should promote strong daytime heating and moderate instability across portions of Nebraska into the Dakotas. As strong MLCIN will also be over the region, it is uncertain how many thunderstorms will develop given relatively weak forcing. Gradual cooling from the advancing mid-level trough should aid in erosion of MLCIN through time, with at least isolated thunderstorms capable of strong to severe wind possible across the Black Hills or along the lee trough into eastern WY. For now, this threat remains too uncertain to include probabilities. ....Northwest and Northern Rockies... The western trough will support widely scattered thunderstorm development across much of the Pacific Northwest into the northern Rockies. Modest moisture and sufficient deep layer shear amid steep low to mid-level lapse rates may support some instances of strong to severe wind. However, largely meridional flow aloft, remnant cloud cover, and MLCAPE generally less than 500 J/kg suggest organized severe potential should remain limited. ...Thornton.. 09/08/2025 $$ = = = 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 3.28-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .