September 30, 2021
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Mount Saint Helens eruption data of events
⟶ Updated 14 Dec 2017 ⟶
List of edits
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Mt. saint helens erupts explosively and enters a 123 year of silence
earthquake signals reawakening: eruption with ash and steam of March and a 250 foot crater opened.
hundreds of earthquakes shakes the mountain in may 1980.
St. Helens’ eruption, with its lateral blast, debris avalanche, mudflows and floods, claims 57 lives and obliterates virtually everything within an eight-mile radius. An ash column rises 15 miles and travels east at 60 mph, circling the globe in two weeks.
July-October 1980 destruction of lava dome inside of the 250 foot crater
New dome reaches 26 million cubic yards
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