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Although minor steam explosions may have occurred in 1898, 1903, and 1921, Mount St. Helens gave little or no evidence of being a volcanic hazard for more than a century after its eruption in 1857.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoyes ut was dormant until it blew it's top OFF!
Wiki User
∙ 9y agoPrior to 1980, the last eruption f Mount St. Helens was in 1857. This is a dormancy period of 123 years.
Wiki User
∙ 13y agoThe eruption lasted for about 48 hours
Wiki User
∙ 13y agoabout 9 hours
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What lay dormant for 130 years until 1980?
mount st helens
How many deaths occured in the mount St Helens eruptions?
The 1980 eruption of Mount St. Helens killed 57 people.
What is the vei rating of mt st Helens?
The 1980 eruption of Mount St Helens was a VEI 5.
What volcano erupted in 1970?
Mount St. Helens famously erupted on May 18 1980.
Which mountain erupted in 1980 in Washington US?
Mount St. Helens is a active volcano, in the Washington State.
What lay dormant for 130 years until 1980?
mount st helens
How many deaths occured in the mount St Helens eruptions?
The 1980 eruption of Mount St. Helens killed 57 people.
What is the volcano that erupted in the state of Washington in 1980?
mount st Helens
What was the destruction on Mount St Helens?
1980
What was mt st Helens most famous eruption?
The 1980 eruption of Mount St. Helens.
When was the Mount St. Helens eruption?
May 18th, 1980
What volcanoe erupted in the U.S in 1980?
Mount St. Helens
Was the 1980 mount saint helens eruption gentle?
yes. it was
What US volcano erupted in 1980?
Mount St. Helens
After 123 years of being dormant mount saint helens erupted on what date?
On May 18, 1980. The previous major eruption was in 1800, with smaller releases of steam and ash from 1831 to 1857.
What is the vei rating of mt st Helens?
The 1980 eruption of Mount St Helens was a VEI 5.
What volcano erupted in 1970?
Mount St. Helens famously erupted on May 18 1980.
