M4.7 earthquake 79 km SW of Adak, Alaska
A magnitude 4.7 earthquake struck 79 km SW of Adak, Alaska on Wed, Dec 5, 1973, 3:39 AM GMT-11 (14:39 UTC), 51 km (32 mi) below the surface.
A larger quake followed: M5.8 100 km WSW of Adak, 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
- 1973-12-05 14:39:49 UTC
- Depth
- 51.0 km (31.7 mi), shallow
- Epicenter
- 51.457° N, 177.570° 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
- 23
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00004ep. Read Mon, Sep 28, 2026, 3:43 PM UTC.