M4.5 earthquake 177 km E of Atka, Alaska
A magnitude 4.5 earthquake struck 177 km E of Atka, Alaska on Sat, Oct 11, 1980, 3:40 AM GMT-10 (13:40 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.7 77 km E of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1980-10-11 13:40:41 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.168° N, 171.606° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 17
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 usp0001a6x. Read Fri, Oct 2, 2026, 8:50 AM UTC.