What eruption has the highest Vei?

1. Yellowstone eruption, 640,000 years ago (VEI 8)

What were the six volcanic hazards?

Several hazards may affect the area around the volcano, such as lava flows, pyroclastic flows, lahars, jökulhlaups and landslides or debris avalanches. Volcanic activity also produces hazards that can affect areas far from the volcano, such as tephra or ash falls, releases of gas and tsunamis.

Is there a Vei 9 volcano?

According to the USGS, it is the largest known eruption since the Ordovician era, between 504 and 438 million years ago. It was so large, in fact, that in a 2004 report in the Bulletin of Volcanology, scientists recommended adding a ninth level to the VEI scale, and declared the La Garita eruption a magnitude 9.2.

What type of eruption was Mt St Helens?

explosive pyroclastic eruptions
Mt. St. Helens typically generates explosive pyroclastic eruptions, in contrast to many other Cascade volcanoes, such as Mt. Rainier which typically generates relatively non-explosive eruptions of lava.

Is Mount Saint Helens still a threat?

It’s been 40 years since Mount St. Helens famously roared to life, sending ash and gas 15 miles high, flattening 135 square miles of forest, and killing 57 people in the country’s deadliest eruption. Today, the volcano is still one of the most dangerous in the United States, and the most active of the Cascade Range.

What kind of volcano was Mt. St. Helens?

stratovolcano
Mount St. Helens is a stratovolcano, a steep-sided volcano located in the Pacific Northwest region of the United States in the state of Washington.

What VEI is Yellowstone?

Yellowstone is now perhaps the most famous of the world’s volcanoes that have produced VEI 8 eruptions.

What VEI was Pompeii?

The VEI has been determined for more than 5,000 eruptions in the last 10,000 years. None of these eruptions rates the maximum VEI of 8. For example, the eruption of Vesuvius Volcano in A.D. 79, which destroyed Pompeii and Herculaneum, only rates a VEI of 5.

Did Mt St Helens erupt twice?

Helens has been the most active Cascade Range volcano, with about 20 eruptive periods. Over the millennia, debris avalanches, pyroclastic flows, lava flows, and mudflows have built, torn apart, and rebuilt the volcano. From the May 18, 1980, eruption to 1986, the volcano erupted an additional 21 times.