World Map › Major Earthquakes Since 1900 › 1980
Historic Earthquake
1980 United States of America Earthquake
18 May 1980 · Mt St Helens · United States of America
On 18 May 1980 at 15:32 UTC, a magnitude 5.2 earthquake struck the United States of America (Mt St Helens), at a depth of 4 km. It occurred on the North American Plate, 270 km from its boundary with the Juan de Fuca Plate (subduction zone). It killed at least 61 people.
- Date
- 18 May 1980
- Time
- 15:32 UTC
- Magnitude
- 5.2
- Depth
- 4 km
- Maximum Intensity
- V (Mercalli)
- Deaths
- 61
- Estimated Damage
- 2.0 billion US dollars
- Tsunami
- See the tsunami (250.0 m wave)
- Plate
- North American Plate
- Country
- United States of America
- Nearest Volcano
- St. Helens (2 km)
Nearby Major Earthquakes
Other major earthquakes recorded within 300 km.
- 19491949 Olympia Earthquake · M 7.08 deaths
Sources: NOAA National Centers for Environmental Information, Global Significant Earthquake Database (doi:10.7289/V5TD9V7K) · Wikidata · Bird (2003), PB2002 · Natural Earth