M4.6 earthquake 101 km WSW of Adak, Alaska
A magnitude 4.6 earthquake struck 101 km WSW of Adak, Alaska on Sun, Jan 31, 1982, 6:21 PM GMT-11 (05:21 UTC), 29 km (18 mi) below the surface.
A larger quake followed: M5.3 19 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
- 4.6 (mb), light
- Local time
- UTC
- 1982-02-01 05:21:40 UTC
- Depth
- 28.6 km (17.8 mi), shallow
- Epicenter
- 51.594° N, 178.034° 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.
Nearby
Within 100 km, magnitude 1.6 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.319 km WSW of Adak, Alaska · 16298 days ago · 60 km deep · 83 km away
- 5.2121 km WSW of Adak, Alaska · 16277 days ago · 55 km deep · 20 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001jdy. Read Tue, Sep 22, 2026, 7:59 AM UTC.