4th Grade Mt St Helens

18th May 1980

The date of the eruption

5.1

The Richter magnitude of the final earthquake

8.32

The time of the eruption

57

The number of people who died

300

The size of the bulge (in feet)

Washington State

The location of the Volcano

15 minutes

How long the blast lasted.

mudflows

Formed when ice and snow was heated from the blast and mixed with ash, pumice, and rock.

1300 feet

How much shorter the mountain was the day after the blast.