At this moment three years ago today, a large EF-4 tornado was getting ready to tear through Tuscaloosa, Alabama. The storm stayed on the ground for over 80 miles, tearing through Tuscaloosa and the Birmingham suburbs, killing 64 people and injuring over 1,500 more. The outbreak was the most prolific in recorded history (producing 358 tornadoes in 4 days) and most violent ever recorded in the southern United States.