This 1972 weather event is the biggest flood to hit the U.S. in the last 100 years. In the eastern Black Hills of South Dakota near Rapid City, a stationary group of thunderstorms began around 5 p.m.

From 1975: Spokane police formed a SWAT team (Special Weapons and Tactics) in November 1973 – but as of September 1975, the team had never been called into service. The 15-person team had spent most ...

An atmospheric river is threatening to unleash flooding rain and mudslides across Southern California, triggering evacuation warnings in Los Angeles.