The eruption triggered mudslides, an explosion, and plumes of ash that did enormous damage. The death of 57 people led to large changes in how the US monitors and prepares for eruptions. On May 18, ...

Editor's note: This story was originally published in May 2018. Peggy Short-Nottage and her husband joined sightseers rushing to Mount St. Helens when volcanic activity escalated in the spring of 1980 ...

Mount St. Helens in Washington State was once the "Mount Fuji of America"—admired for its symmetrical cone shape similar to Japan's highest peak. It was a popular Pacific Northwest destination, ...

VANCOUVER, Wash. – Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, millions of tons of sediment still pour into the Cowlitz ...

Sunday marks 45 years since Mount St. Helens erupted in Washington state. The deadly eruption happened shortly after 8:30 a.m. on May 18, 1980, following months of small explosions and earthquakes.

Sunday marks the anniversary of the May 18, 1980, volcanic eruption that rocked the Northwest. Geologist Carolyn Driedger recounts the haunting day before that catastrophic event — and its lasting ...

For over a century, geologists were baffled by the rolling mounds scattered across Northern California's Shasta Valley. Travelers along Interstate 5 can glimpse these unusual hills and ridges, often ...

The 1980 blast remains the deadliest volcanic eruption in U.S. history. More than 300 miles from the volcano, cities like Pullman, Washington, and Moscow, Idaho, were covered in ash. A 23-year-old ...

It was 45 years ago today when Mount St. Helens erupted, triggering the biggest landslide in Earth’s recorded history and creating an ash cloud that reached across the country. John Yang looks back at ...

Government scientists confirmed Mount St. Helens is not erupting despite recent concerns. Commercial pilots reported seeing what they believed to be ash near the volcano. Strong winds are lifting old ...

The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range. From southern British Columbia ...