M6.5 earthquake 95 km ESE of Atka, Alaska
A magnitude 6.5 earthquake struck 95 km ESE of Atka, Alaska on Sun, Mar 10, 1957, 4:26 AM GMT-11 (15:26 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M6.5 79 km SSE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.5 (mw), strong
- Local time
- UTC
- 1957-03-10 15:26:28 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 51.729° N, 173.041° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.29
- Depth from
- From location
Nearby
Within 100 km, magnitude 3.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 6.099 km SE of Atka, Alaska · 25405 days ago · 33 km deep · 20 km away
- 6.579 km SSE of Atka, Alaska · 25404 days ago · 25 km deep · 41 km away
- 5.8161 km SSE of Atka, Alaska · 25383 days ago · 18 km deep · 91 km away
- 5.8165 km SSE of Atka, Alaska · 25382 days ago · 15 km deep · 97 km away
- 5.8150 km SSE of Atka, Alaska · 25382 days ago · 15 km deep · 77 km away
- 6.3143 km E of Atka, Alaska · 25380 days ago · 35 km deep · 70 km away
- 6.065 km SE of Atka, Alaska · 25360 days ago · 35 km deep · 35 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886071 (also filed as ushis2148). Read Tue, Sep 29, 2026, 9:18 PM UTC.