7. Hurricane Camille
Year: 1969
Maximum speed: 175 mph
Death toll: over 256
Damage cost: $1.45 billion
Another pretty name in the list of horrifying 15 biggest, deadliest, most devastating hurricanes to hit the United States. Its force was such that it actually made the Mississippi River flow backward from its mouth in Venice, LA to a place north of New Orleans, LA, which is a distance of 200 km (125 mi).