Decades after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, sediment ...

“High rates of seismicity, interpreted as recharge, have been observed in the past at Mount St. Helens and at other volcanoes ...

Mount St. Helens has recently been swarming with geological activity, which could mean the giant American volcano is gearing up for its next big eruption. Produced by Zach Wasser and Dave Mosher.

It's common knowledge that Yellowstone Park sits on top of an ancient supervolcano, but what happened last time it erupted?

A teenager when he began scuba diving in the shadow of Mount St. Helens, he remembers the lake ... now twice the length of those pre-eruption rainbows, reappear? Everyone has a theory.

The sediment retention dam in Toutle has become less and less effective as it fills, switching from catching about 80% of passing sediment to allowing 80% to pass, according to ...

Now, efforts to monitor what is considered the 'most active volcano in the Cascades' and one with the 'highest likelihood of future eruption ... stratovolcano, Mount St Helens in Washington ...

One of the most violent natural disasters of our time, the colossal eruption of Mt. St. Helens in 1980 blasted away an entire mountainside. Over 200 square miles of pristine forest were buried ...

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980. Other case studies include the eruption of Mount Etna in Sicily in 1974 and Heimaey eruption in ...

Similarly, the 1980 eruption of Mount St. Helens-just 50 miles from Mount Rainier-triggered a lahar that destroyed over 200 homes and contributed to the deaths of 57 people. In response to the ...

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 River each year.