M4.6 earthquake 77 km WSW of Attu Station, Alaska
A magnitude 4.6 earthquake struck 77 km WSW of Attu Station, Alaska on Sun, Dec 12, 1982, 7:35 AM GMT+11 (20:35 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 30 km SSE of Attu Station, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1982-12-11 20:35:38 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.505° N, 172.184° E
- 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.
- Depth from
- OPERATOR_ASSIGNED
Nearby
Within 100 km, magnitude 1.6 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 usp0001rcw. Read Sun, Oct 4, 2026, 10:47 PM UTC.