SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0750 PM CDT Tue May 20 2025 Valid 210100Z - 211200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS IN EASTERN TN...NORTHERN/CENTRAL AL AND NORTHWEST GA... ...SUMMARY... The greatest severe risk should persist this evening across eastern Tennessee, northern to central Alabama, and northwest Georgia. A few tornadoes and scattered damaging winds are likely, along with isolated large hail. ...Lower MS Valley to the Cumberland Plateau into GA and the Carolinas... A scattered to broken swath of mixed discrete supercells, clusters, and line segments is ongoing across the TN to Lower MS Valleys. Primary severe potential will exist through late evening immediately ahead of this activity from eastern Tennessee through the central Alabama vicinity. Convection will move east across the pronounced MLCAPE gradient across the southern Appalachians in the next few hours, yielding a more isolated/weakening severe threat overnight into the Carolinas. Large buoyancy persists ahead of the Lower MS Valley storms. But increasingly veered and diminishing low-level flow in this region, and weakening mid-level ascent with further removal of the shortwave impulse suggest convection should subside overnight. ..Grams.. 05/21/2025
