M5.8 earthquake 150 km SSE of Atka, Alaska
A magnitude 5.8 earthquake struck 150 km SSE of Atka, Alaska on Tue, Apr 2, 1957, 10:27 AM GMT-11 (21:27 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M6.0 65 km SE 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
- 5.8 (mw), moderate
- Local time
- UTC
- 1957-04-02 21:27:59 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 51.035° N, 173.093° 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: 1 in the 60 days after this one and 8 in the 30 days before it.
After
Before
- 5.8165 km SSE of Atka, Alaska · 25383 days ago · 15 km deep · 21 km away
- 5.8161 km SSE of Atka, Alaska · 25384 days ago · 18 km deep · 13 km away
- 5.8174 km SSE of Atka, Alaska · 25384 days ago · 20 km deep · 27 km away
- 6.579 km SSE of Atka, Alaska · 25404 days ago · 25 km deep · 70 km away
- 6.099 km SE of Atka, Alaska · 25406 days ago · 33 km deep · 59 km away
- 6.595 km ESE of Atka, Alaska · 25406 days ago · 25 km deep · 77 km away
- 6.689 km S of Atka, Alaska · 25407 days ago · 33 km deep · 92 km away
- 6.662 km SSE of Atka, Alaska · 25407 days ago · 25 km deep · 91 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886312 (also filed as ushis2210). Read Wed, Sep 30, 2026, 3:03 PM UTC.