M4.8 earthquake 261 km SW of Adak, Alaska
A magnitude 4.8 earthquake struck 261 km SW of Adak, Alaska on Tue, Oct 2, 1973, 8:47 PM GMT-12 (08:47 UTC), 37 km (23 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1973-10-03 08:47:47 UTC
- Depth
- 37.0 km (23.0 mi), shallow
- Epicenter
- 50.121° N, 179.126° 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
- 18
Nearby
Within 100 km, magnitude 1.8 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 usp00003nt. Read Tue, Sep 22, 2026, 4:10 PM UTC.