Mount St. Helens Eruption May 18, 1980

USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens

0:00 Mount St. Helens Erupts!
0:55 How was the volcano monitored?
2:58 Surveying the Eruption
4:08 How did the eruption happen?
5:00 Learning from the eruption