The Columbia Theatre in Longview, Washington, is celebrating its centennial. Theater officials say the 1980 eruption of Mount ...

Mount Saint Helens in Washington, which notoriously and cataclysmically erupted in 1980 and had its ash ... St. Helens and at ...

WA leaders are reassessing their plans for the possibility of an eruption ... or Mount St. Helens. "We don’t really know when ...

Likelihood: While Mount St. Helens is expected to erupt ... a city of around six million. A large eruption could send "a city-sized cloud of ash 20 centimeters thick" to "descend upon 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.

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 ...