Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0255 AM CST Thu Jan 22 2026 Valid 251200Z - 301200Z ...DISCUSSION... A surface low over the Deep South on Day 4/Sunday morning will develop east/northeast through early Monday, moving offshore the Carolinas coast. As this occurs, an arctic cold front will continue to push southeast across the Southeast U.S. Ahead of the front, modified Gulf moisture will be in place, supporting weak instability. As an upper trough approaches, large-scale ascent and warm advection atop the surface front will support isolated thunderstorms across southern MS/AL into northern FL and southern GA. Modest instability and poor lapse rates should limit severe potential within the warm sector. By Day 5/Monday, the cold front will have moved well offshore the Gulf and Atlantic coasts and an arctic airmass will envelop much of the CONUS. Mean troughing is forecast to persist, allowing reinforcing shots of colder air to filter southward east of the Rockies and preclude any return flow across the Gulf basin.Read more