SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0120 PM CST Wed Dec 24 2025 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe storms are not expected across the continental U.S. Friday or Friday night. ...Synopsis... An expansive upper ridge centered over the Plains States will begin to weaken as it moves eastward Friday. Flow aloft will become increasingly zonal as broad troughing over the West Coast moves inland. With continued moisture transport and southwesterly flow in place over much of the West, isolated storms could be ongoing across parts of the West Coast and southern CA early. However, little to no severe threat is expected given the weak buoyancy. Troughing is forecast to move farther inland quickly, limiting the thunderstorm threat Friday and Friday night. ...Upper OH Valley... A secondary low-amplitude upper trough will develop over the northeastern US late Friday. As it moves southeastward, a weak, clipper-style, surface low will deepen across the upper OH Valley and central Appalachians. Cool mid-level temperatures and modest low-level moisture ahead of the low and trailing cold front could support weak elevated buoyancy into early Saturday. Isolated thunderstorms are possible into early Saturday. However, with less than 500 J/kg of MUCAPE, severe storms appear unlikely. ..Lyons.. 12/24/2025
