Mount St. Helens Erupts
Mount St. Helens in Washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. Ash from the volcanic eruption fell as far away as Minnesota.
Throughout April, scientists watched a bulge on the north side of Mount St. Helens grow larger and larger. Finally, on May 18 at 8:32 a.m., a sudden 5.1-magnitude earthquake and eruption rocked the mountain. The north side of the peak rippled and blasted out ash at 650 miles per hour. A cloud of ash, rocks, gas and glacial ice roared down the side of the mountain at 100 mph. Fourteen miles of the Toutle River were buried up to 150 feet deep in the debris. Magma, at 1,300 degrees Fahrenheit, flowed for miles.
The 24-megaton blast demolished a 230-square-mile area around the mountain. 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. Mount St. Helens went from 9,600 feet high to only 8,300 feet high in a matter of seconds.
Read the full article at History.com.
