May 18, 2021 - The 1980 Mount St. Helens Eruption
- Author
- The Weather Network
- Published
- Tue 18 May 2021
- Episode Link
- http://www.theweathernetwork.com/weatherhistory
On the morning of May 18, Mount St. Helens was shaken by an earthquake of about 5.0 magnitude, and the entire north side of the summit began to slide down the mountain. This Day in Weather History.
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