M5.8 earthquake 174 km SSE of Atka, Alaska
A magnitude 5.8 earthquake struck 174 km SSE of Atka, Alaska on Mon, Apr 1, 1957, 12:35 AM GMT-11 (11:35 UTC), 20 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.8 (mw), moderate
- Local time
- UTC
- 1957-04-01 11:35:35 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 50.794° N, 173.084° 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
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.8 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.8161 km SSE of Atka, Alaska · 25383 days ago · 18 km deep · 14 km away
- 5.8165 km SSE of Atka, Alaska · 25382 days ago · 15 km deep · 9 km away
- 5.8150 km SSE of Atka, Alaska · 25382 days ago · 15 km deep · 27 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886300 (also filed as ushis2207). Read Wed, Sep 30, 2026, 6:38 AM UTC.