There was a huge tornado out break of 147 tornados that hit the us soil.13 tornadoes to be exact hit the US soil. The 13 tornadoes hit the US soil on April 3 and 4 of 1974. The out break killed310 on the US soil. 48 of the tornadoes that hit the US soil where killers. 7 of the tornados read F5 on the Fujita scale.