M4.1 earthquake 83 km ESE of Adak, Alaska
A magnitude 4.1 earthquake struck 83 km ESE of Adak, Alaska on Sat, Jan 29, 1977, 4:02 PM GMT-11 (03:02 UTC), 44 km (27 mi) below the surface.
A larger quake followed: M4.3 85 km SSE 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
- 4.1 (mb), light
- Local time
- UTC
- 1977-01-30 03:02:50 UTC
- Depth
- 44.0 km (27.3 mi), shallow
- Epicenter
- 51.566° N, 175.532° 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
- 12
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.148 km ESE of Adak, Alaska · 18100 days ago · 63 km deep · 36 km away
- 4.385 km SSE of Adak, Alaska · 18075 days ago · 33 km deep · 51 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000mdg. Read Tue, Sep 22, 2026, 9:39 AM UTC.