SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0645 AM CST Mon Dec 29 2025 Valid 291300Z - 301200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms will not occur across the contiguous United States through tonight. ...Synopsis... Water-vapor imagery this morning shows a trough over the Great Lakes and much of the eastern U.S. whereas a split-flow pattern prevails over the West. A cold front will continue south through much of the Gulf of America and move east of the Eastern Seaboard during the period. High pressure centered over the south-central states will lead to cool/stable conditions over much of the Lower 48. ..Smith/Weinman.. 12/29/2025
