May 18, 1980

On May 18, 1980 at 8:32 a.m., a magnitude 5.1 earthquake triggered one of the world’s largest recorded landslides, followed by one of the most powerful volcanic blasts in the history of North America: Mount St. Helens. That morning, twenty-three square miles of the mountain blasted sideways at 650 m.p.h. The temperature reached 660 degrees…