The eruption of Mount St. Helens happened 42 years ago today on May 18, 1980. It remains the deadliest volcanic eruption in US history. >>Trending stories: kiro.tv/3ksZXKp | KIRO 7 News

May 18, 1980: The fatal Mount St. Helens eruption. | The National Desk - TND

🌋 On March 27, 1980, Mount St. Helens in Washington started erupting with a series of explosions and ash clouds. The activity kept building up until a massive eruption happened on May 18 at 8:32 AM. It was one of the most powerful eruptions in U.S. history, with an explosivity rating of 5. Before this, the last big eruption in the U.S. was in 1915 at Lassen Peak, California. | The Galactic Void

This GOES-West animation shows the eruption of Mount Saint Helens, which occurred 36 years ago today on May 18, 1980. The blast, which blew off nearly 1,000 feet of the mountain top, killed 57 people, sent volcanic ash across the Northwest, and caused forest fires and flooding. The visible satellite imagery shows the massive eruption in the western part of the Cascade range. A large pyroclastic plume of smoke and ash can be seen following the eruption. NOAA scientists and researchers use geostat

🗓️ On This Day – May 18, 1980 At 8:32 AM, Mount St. Helens erupted in the most destructive volcanic event in U.S. history. The blast destroyed over 200 square miles of forest, scattered ash across multiple states, and took 57 lives. A massive landslide followed by a lateral explosion changed the mountain forever. Today marks 45 years since that eruption. It remains a defining moment in geological history and emergency response in the Pacific Northwest. 🌋 All archival footage and imagery used f