On this day in 1980, Mount St. Helens erupts in Washington, United States, killing 57 people and causing $3 billion in damage.
The 24-megaton blast demolished a 230-square-mile area around the mountain. Geologist Dave Johnson was the closest to the eruption when it blew. He was on his radio that morning and was only able to say, “Vancouver, Vancouver, this is it!” before his truck was pushed over a ridge and he was killed.
Millions of trees were scorched and burned by the hot air alone. When the glacier atop the mountain melted, a massive mudslide wiped out homes and dammed up rivers throughout the area. The plume of ash belched out for nine hours; easterly winds carried it across the state and as far away as Minneapolis, Minnesota. The falling ash clogged carburetors and thousands of motorists were stranded. Fifty-seven people died overall from suffocation, burns and other assorted injuries. Twenty-seven bodies, including that of the stubborn Harry Truman, were never found. Mount St. Helens went from 9,600 feet high to only 8,300 feet high in a matter of seconds.