M5.7 earthquake 73 km SSW of Atka, Alaska
A magnitude 5.7 earthquake struck 73 km SSW of Atka, Alaska on Sat, Oct 1, 1966, 8:23 PM GMT-11 (07:23 UTC), 33 km (20 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (mw), moderate
- Local time
- UTC
- 1966-10-02 07:23:37 UTC
- Depth
- 32.5 km (20.2 mi), shallow
- Epicenter
- 51.608° N, 174.700° 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 2.7 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem842106. Read Wed, Sep 30, 2026, 6:47 AM UTC.