2011 Super Outbreak
On April 27, the supercells moved into Tennessee and Mississippi, and the squall line of severe thunderstorms moved into Alabama. Then, the supercells moved into Alabama, and produced 3 EF5 tornadoes, 13 EF4 tornadoes, and 23 EF3 tornadoes. The squall line of severe thunderstorms moved into Kentucky, North Carolina, and South Carolina.