ACUS01 KWNS 200049 SWODY1 SPC AC 200048 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0748 PM CDT Fri Apr 19 2024 Valid 200100Z - 201200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe threat appears minimal with thunderstorms tonight. ...01z Update... Very isolated thunderstorms continue this evening across the southern Appalachian region into the Carolinas. This activity developed in large part due to strong boundary-layer heating in conjunction with frontal forcing and orographic influences. However, nocturnal cooling and weak large-scale forcing favor gradual weakening over the next few hours. While a few flashes of lightning will be noted with the most robust updrafts, the probability of severe appears too low to warrant a MRGL risk overnight. Upstream, weak mid-level short-wave trough is advancing across far west TX. This feature will encourage weak LLJ across the Edwards Plateau later this evening, and a corridor of focused low-level warm advection will become established from northwest TX into the Red River region late. Elevated thunderstorms will develop along this zone, and while hail can't be ruled out with the strongest storms, the risk of hail, in excess of 1 inch, appears too low to warrant severe probabilities. ..Darrow.. 04/20/2024 $$