M4.7 earthquake 69 km SE of Atka, Alaska
A magnitude 4.7 earthquake struck 69 km SE of Atka, Alaska on Thu, Aug 23, 1973, 10:58 AM GMT-10 (20:58 UTC), 38 km (24 mi) below the surface.
A larger quake followed: M4.8 65 km SSE 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
- 4.7 (mb), light
- Local time
- UTC
- 1973-08-23 20:58:13 UTC
- Depth
- 38.0 km (23.6 mi), shallow
- Epicenter
- 51.752° N, 173.489° 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.
- Stations used
- 24
Nearby
Within 100 km, magnitude 1.7 and up: 9 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.865 km SSE of Atka, Alaska · 19385 days ago · 45 km deep · 15 km away
- 5.162 km SE of Atka, Alaska · 19385 days ago · 51 km deep · 13 km away
- 4.562 km SSE of Atka, Alaska · 19384 days ago · 58 km deep · 20 km away
- 4.646 km SE of Atka, Alaska · 19378 days ago · 42 km deep · 23 km away
- 4.976 km SE of Atka, Alaska · 19376 days ago · 42 km deep · 7 km away
- 4.567 km SSE of Atka, Alaska · 19360 days ago · 39 km deep · 29 km away
- 5.070 km SSE of Atka, Alaska · 19358 days ago · 36 km deep · 19 km away
- 4.1134 km SSE of Atka, Alaska · 19358 days ago · 33 km deep · 70 km away
- 5.4Andreanof Islands, Aleutian Islands, Alaska · 19358 days ago · 49 km deep · 19 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000369. Read Tue, Sep 22, 2026, 10:26 PM UTC.