M4.4 earthquake 157 km SSW of Adak, Alaska
A magnitude 4.4 earthquake struck 157 km SSW of Adak, Alaska on Thu, Apr 28, 1977, 3:37 AM GMT-10 (13:37 UTC), 21 km (13 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1977-04-28 13:37:37 UTC
- Depth
- 21.0 km (13.0 mi), shallow
- Epicenter
- 50.601° N, 177.631° 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
- 57
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 usp0000nnx. Read Tue, Sep 22, 2026, 8:27 PM UTC.