On May 5, two F4 tornadoes struck Iowa, including a long-tracked tornado family that injured 11 people. On May 6, an outbreak ...

We've discussed May's deserved reputation for both violent tornadoes and large outbreaks. In Texas, two of its worst tornadoes of all time happened in the middle of May, each in one of the state's ...

It's tornado season in Colorado. After a tornado has touched down and caused damage, it's up to the National Weather Service to determine its intensity. Meteorologists do this using a scale called the ...