Original: The Hurricane Katrina tornado outbreak was a tornado outbreak across the eastern United States from August 29 to August 31, 2005, spawned mostly by the outer bands of Hurricane Katrina (or the remnants thereof).
Simplified: There were a total of 44 confirmed tornadoes - 18 in Georgia, 11 in Mississippi, 5 each in Virginia and Pennsylvania, 4 in Alabama, and 1 isolated tornado in Florida three days before the main outbreak.