National Weather Service United States Department of Commerce


On a mild Wednesday and Thursday, April 3 and 4, 1974, the United States experienced one of the biggest outbreak of tornadoes in our nation's recorded history. Meteorologists refer to this as the Super Outbreak in which 148 tornadoes swept across 13 states in roughly a 24 hour time frame. From Illinois to North Carolina and from Michigan to Mississippi, tornadoes and severe thunderstorms killed 335 people and injured over 6,000. Over 15,000 homes, businesses and farm buildings were destroyed and another 17,000 buildings were damaged.
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