..SUMMARY... A tornado outbreak is likely on Saturday across the central Gulf Coast States and Deep South into the Tennessee Valley. Numerous significant tornadoes, some of which should be long-track and potentially violent, are expected on Saturday afternoon and evening. The most dangerous tornado threat should begin across eastern Louisiana and Mississippi during the late morning to afternoon, spread across Alabama late day into the evening, and reach western parts of the Florida Panhandle and Georgia Saturday night. ...Central Gulf Coast/Deep South/TN Valley... After collaboration with WFOs BMX/JAN/MOB, an upgrade to a level 5-HIGH risk appears warranted for the most...