M4.6 earthquake 46 km SE of Atka, Alaska
A magnitude 4.6 earthquake struck 46 km SE of Atka, Alaska on Sun, Sep 2, 1973, 12:02 PM GMT-10 (22:02 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M5.4 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1973-09-02 22:02:08 UTC
- Depth
- 42.0 km (26.1 mi), shallow
- Epicenter
- 51.909° N, 173.710° 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
- 26
Nearby
Within 100 km, magnitude 1.6 and up: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.976 km SE of Atka, Alaska · 19384 days ago · 42 km deep · 30 km away
- 4.567 km SSE of Atka, Alaska · 19369 days ago · 39 km deep · 33 km away
- 5.070 km SSE of Atka, Alaska · 19367 days ago · 36 km deep · 30 km away
- 4.1134 km SSE of Atka, Alaska · 19367 days ago · 33 km deep · 91 km away
- 5.4Andreanof Islands, Aleutian Islands, Alaska · 19367 days ago · 49 km deep · 30 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003aj. Read Thu, Oct 1, 2026, 7:39 AM UTC.