SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1104 AM CST Sat Dec 20 2025 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected Sunday. ...Synopsis... Zonal flow aloft will become modestly more amplified on Sunday. Upper-level ridging will become more prominent in the central U.S. A low-amplitude shortwave trough will move into the Northwest during the evening. Isolated low-topped thunderstorms may impact coastal areas of Washington and far northwest Oregon. Along the central Gulf coast, a cold front will slow and become nearly stationary inland. A weak warm/moist advection regime could lead to development of showers. Given the slight rise in mid-level heights, residual capping, and lack of greater low-level forcing, potential for thunderstorm development within this regime still appears low. ..Wendt.. 12/20/2025
