8.6
EarthquakeExtreme
M8.6 earthquake - 1957 Atka, Alaska Earthquake
25423 d ago · 9 Mar 1957, 14:22 UTC 1957 Atka, Alaska Earthquake
What happened
A magnitude 8.6 earthquake struck 1957 Atka, Alaska Earthquake on 9 Mar 1957, 14:22 UTC at a depth of 25 km.
Earthquakes of this size are classed as Great. Can cause severe damage across hundreds of kilometres and may trigger tsunamis. This was a shallow earthquake, which tends to be felt more strongly at the surface.
Timeline
First reported by USGS
16 Oct 2026, 20:46 UTC
Community
Did you feel it?
Nearby in the last 30 days
- 0.5
M0.5 earthquake - 41 km NE of Adak, Alaska
5 km deep
Minor - 2.6
M2.6 earthquake - 155 km W of Adak, Alaska
94 km deep
Light - 3.5
M3.5 earthquake - 8 km SW of Atka, Alaska
195 km deep
Light - 2.9
M2.9 earthquake - 93 km ESE of Adak, Alaska
27 km deep
Light - 4.2
M4.2 earthquake - 167 km S of Adak, Alaska
10 km deep
Moderate