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March 20, 1980 was the date of the big eruption.

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How big was the last eruption of Mount Fuji compared to the eruption of Mount Saint Helens?

about as 50% chance that mount saint helens' eruption is way bigger than mount fuji


Where was the Mount St. Helens eruption?

The Mount St. Helens eruption occurred in Washington state, in the western United States.


What was mt st Helens most famous eruption?

The 1980 eruption of Mount St. Helens.


How many deaths occured in the mount St Helens eruptions?

The 1980 eruption of Mount St. Helens killed 57 people.


What was the latest eruption of Mount St. Helens?

The latest eruption was in 2008.


What is the name of the peak that had a powerful eruption in 1980?

Mount St. Helens in Washington state had a powerful eruption on May 18, 1980.


What was the physical destruction of Mount St Helens eruption?

Just that. A volcanic eruption


On what day and at what time did the 1980 eruption happen?

on the mnt st helens eruption in 1980 it was may 18th at 8:30 am


What happen in mt st helens eruption in May 30 1995?

AnswerIn 1980 a series of Large Earthquakes awakened the previous sleeping volcano, Mt. St Helens. A Pyroclastic eruption was caused when a huge explosion blasted out the side of the Volcano, which also caused a huge Landslide. 57 people died including local man Harry Truman who refused to leave his home at Spirit Lake, and Daniel Johnston a local Volcanologist was killed in the Ash cloud. It was one of America's biggest Earthquakes!


What tool was used to measure the eruption of mount st helens?

Scientists used various tools to measure the eruption of Mount St. Helens in 1980, including seismometers to monitor earthquakes, tiltmeters to detect ground deformation, and gas analyzers to study volcanic gases. They also used radar to track changes in the shape of the volcano during the eruption.


When did mount etna and mount st Helens erupt last?

The eruption of Mount St. Helens in 1980 lasted for 9 hours


What type of eruption does mount saint helens have?

a pyroclastic flow