SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 PM CDT Sat Sep 27 2025 Valid 291200Z - 301200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Monday. ...Synopsis... A broad and pronounced mid-level trough will gradually overspread the Interior West while a tropical cyclone meanders off of the Carolina coastline on Monday (visit www.nhc.noaa.gov for forecast details on TC9). Colder temperatures aloft overspreading the northern Great Basin into the northern Rockies will promote scant buoyancy, amid deep-layer ascent, to support convection deep enough to produce a few lightning flashes through Monday. Isolated to scattered thunderstorms may also develop atop the central and southern Rockies, as the passage of a mid-level impulse lifts a moist low- to mid-level airmass. Finally, a couple of lightning flashes may be observed with the deeper convective cells embedded within rainbands approaching the FL and Carolina shoreline as a tropical cyclone parallels the FL Peninsula. ..Squitieri.. 09/27/2025
