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The 1980 eruption of Mount St. Helens, a stratovolcano located in Washington state, in the United States, was a major volcanic eruption. It rated a 5 on the Volcanic Explosice Index, which rates volcanic eruptions from 1-10.
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What are facts about st helens?
last erupted on 2004-july 10 2008 eruption lasted 9 hours
How many did the eruption of Mount St helens kill in July 10 2008?
The eruption of Mount St. Helens did not occur on July 10, 2008. The most significant eruption of the volcano took place on May 18, 1980, which resulted in 57 fatalities. There were no fatalities associated with any eruptions in July 2008, as the volcano was relatively quiet during that time.
How long did the lava flow last of the 1980 Mt St helens eruption last?
There were no lava flows associated with the 1980 eruption. The eruption instead produced a massive eruption column and pyroclastic flows. This eruption lasted for 10 hours. A series of smaller explosive and dome-building eruptions continued from six years.
What made Mt Saint Helen's to erupt?
The eruption of Mount St. Helens in 1980 was triggered by a combination of magma rising towards the surface, increasing pressure in the volcano, and a sudden release of built-up gases. This led to a flank collapse on the north side of the volcano, resulting in a massive eruption that devastated the surrounding area.
Was Krakatoa in 1883 more explosive than Mt St Helen's in 1980?
Yes, far more explosive. The eruption of Krakatoa was more than 10 times larger than the 1980 eruption of Mount St Helens.
How are Krakatoa and mt st Helens similar?
Mount Pinatubo and Mt St Helens are active stratovolcanos. Mt St Helens 1980 Eruption: Fifty-seven people were killed; 250 homes, 47 bridges, 15 miles (24 km) of railways, and 185 miles (298 km) of highway were destroyed. Pinatubo 1991 Eruption: Was 10 times larger then Mt St helens 1980 eruption. Over 800 people were killed by the eruption, mostly by roofs collapsing under the weight of accumulated wet ash, a hazard that was greatly exacerbated by the simultaneous arrival of Typhoon Yunya.
When did the last volcano erupt in the US?
Currently that title goes to Kilauea in Hawaii, which has been erupting almost continuously since 1983. The last volcano to initiate an eruption was Mount Pavlof on the Alaska Peninsula, which produced a small eruption in June 2014.
Where does the last Harry Potter rank?
on a scale of 10, I would say it ranks 10.
What would you give lord of the rings conquest on a scale of 0-10 10 being the best?
10
What are the ratings and certificates for How the Earth Was Made - 2009 Mt- St- Helens 2-10?
How the Earth Was Made - 2009 Mt- St- Helens 2-10 is rated/received certificates of: Australia:G
Do you go by 10's when converting temperatures?
It depends on which scale you are converting from and which scale to. But in general you would not go by 10s.
How many 10 millions are in 10 billion?
Using the more common short scale numbering system there are 1,000 10milions in 10 billion. If it was the long scale it would be 1 million
