Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
241 ACUS03 KWNS 191913 SWODY3 SPC AC 191912 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0112 PM CST Wed Nov 19 2025 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Scattered thunderstorms are expected from the Texas coast into the Tennessee Valley and central/southern Appalachians on Friday. Severe thunderstorms are not expected. ...Synopsis... A low-amplitude mid-level trough will overspread the TN Valley as an upper-low becomes established over CA on Day 3/Friday. Cooler temperatures aloft associated with the CA low will support a few lightning flashes, mainly offshore. Across the TN Valley, the passage of the low-amplitude mid-level trough will encourage the eastward translation of a weak surface low along the OH River toward the Appalachians through the Friday period. A broad fetch of low-level moisture will advect northward toward the OH River has a cold front slowly approaches from the Ozarks (draped southwestward into eastern TX). The warm sector south of the warm front along the OH River, and ahead of the cold front east of the Ozarks, should be adequately buoyant to support isolated to scattered thunderstorm development through the day Friday into Friday evening. Nonetheless, the aforementioned mid-level trough should further de-amplify through Friday, with forcing for ascent expected to weaken as low-level flow heavily veers with time. Furthermore, the mainly unidirectional vertical wind shear will become increasingly displaced from the richer low-level moisture and associated buoyancy, limiting severe potential across the OH Valley and points south/west. ..Squitieri.. 11/19/2025 $$