Alaska earthquakes

M4.3 earthquake 60 km ESE of Adak, Alaska

A magnitude 4.3 earthquake struck 60 km ESE of Adak, Alaska on Thu, Jan 20, 1977, 1:19 AM GMT-11 (12:19 UTC), 46 km (29 mi) below the surface.

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The earthquake

Magnitude
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1977-01-20 12:19:06 UTC
Depth
46.0 km (28.6 mi), shallow
Epicenter
51.712° N, 175.797° 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
9

Nearby

Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 4.183 km ESE of Adak, Alaska · 18141 days ago · 44 km deep · 24 km away
  2. 4.148 km ESE of Adak, Alaska · 18109 days ago · 63 km deep · 12 km away

Before

  1. 5.391 km ESE of Adak, Alaska · 18165 days ago · 38 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000m96. Read Thu, Oct 1, 2026, 10:13 AM UTC.