M6.9 earthquake 275 km SE of Atka, Alaska
A magnitude 6.9 earthquake struck 275 km SE of Atka, Alaska on Sat, Aug 6, 1966, 3:13 PM GMT-11 (02:13 UTC), 11 km (7 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.9 (mw), strong
- Local time
- UTC
- 1966-08-07 02:13:02 UTC
- Depth
- 11.1 km (6.9 mi), shallow
- Epicenter
- 50.524° N, 171.280° 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
- ±0.40
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 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 iscgem844214 (also filed as ushis2905). Read Tue, Sep 22, 2026, 7:44 AM UTC.