M5.8 earthquake 165 km SSE of Atka, Alaska
A magnitude 5.8 earthquake struck 165 km SSE of Atka, Alaska on Tue, Apr 2, 1957, 9:17 AM GMT-11 (20:17 UTC), 15 km (9 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
- 1957-04-02 20:17:00 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 50.856° N, 173.172° 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 6 in the 30 days before it.
After
Before
- 5.8161 km SSE of Atka, Alaska · 25383 days ago · 18 km deep · 8 km away
- 5.8174 km SSE of Atka, Alaska · 25384 days ago · 20 km deep · 9 km away
- 6.579 km SSE of Atka, Alaska · 25404 days ago · 25 km deep · 86 km away
- 6.099 km SE of Atka, Alaska · 25406 days ago · 33 km deep · 79 km away
- 6.595 km ESE of Atka, Alaska · 25406 days ago · 25 km deep · 97 km away
- 6.689 km S of Atka, Alaska · 25406 days ago · 33 km deep · 98 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886310 (also filed as ushis2209). Read Wed, Sep 30, 2026, 8:19 AM UTC.