M4.6 earthquake 164 km WSW of Adak, Alaska
A magnitude 4.6 earthquake struck 164 km WSW of Adak, Alaska on Sun, Dec 12, 1982, 12:56 AM GMT-11 (11:56 UTC), 54 km (33 mi) below the surface.
A larger quake followed: M4.7 165 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
- 1982-12-12 11:56:04 UTC
- Depth
- 53.9 km (33.5 mi), shallow
- Epicenter
- 51.472° N, 178.924° 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: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6250 km WSW of Adak, Alaska · 15953 days ago · 74 km deep · 86 km away
- 4.7165 km WSW of Adak, Alaska · 15950 days ago · 67 km deep · 26 km away
- 4.7140 km WSW of Adak, Alaska · 15939 days ago · 33 km deep · 38 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001rdn. Read Tue, Sep 22, 2026, 5:28 AM UTC.