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 ...

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

Mark Smith remembers them perfectly: 20-year-old Olympia flattops ... $6 million in federal stimulus last year, plus a $163,000 grant to the Mount St. Helens Institute for an exhibit at the ...

Orting Mayor, Josh Penner, was born two years after the Mount St. Helens eruption ... currently monitoring Mount Rainier. There are 20 seismometers in and around the mountain.

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 down into the Cowlitz River ...

When Mount St. Helens in Washington erupted nearly 45 years ago, it killed 57 people ... operates around 20 seismometers in the area and records around a dozen small earthquakes in the vicinity ...

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980 ... 1980 with a series of small earthquakes began. After thousands of additional earthquakes and ...

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.