"Stay well back from the ocean or risk certain death," the National Weather Service tweeted in all caps.
An earthquake centered in eastern Tennessee also was felt in three other states. The U.S. Geological Survey website says the epicenter of the magnitude 3.0 earthquake early Sunday was southeast of Mascot. It also was felt in parts of Georgia, Kentucky and North Carolina. No injuries or damage are reported. It's the second earthquake in eastern Tennessee in the past week. A magnitude 4.4 earthquake on Wednesday was centered near Decatur.