What is the VMI of Mt. Saint Helens?

Jessica

The VEI (http://volcano.und.edu/vwdocs/eruption_scale.html)of the 1980 eruption was 5. Mt. Saint Helens has had one VEI=6, five VEI=5, and one ~4 VEI eruptions since about 2335 BC. That's roughly a large eruption every 500 years (that doesn't mean we won't see another big eruption in our lifetimes). Busy volcano.

Sincerely,
Steve Mattox

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