M4.6 earthquake 140 km WSW of Adak, Alaska
A magnitude 4.6 earthquake struck 140 km WSW of Adak, Alaska on Fri, Sep 5, 1980, 6:34 PM GMT-10 (04:34 UTC), 55 km (34 mi) below the surface.
A larger quake followed: M5.0 114 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1980-09-06 04:34:47 UTC
- Depth
- 55.0 km (34.2 mi), shallow
- Epicenter
- 51.444° N, 178.540° 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
- 59
Nearby
Within 100 km, magnitude 1.6 and up: 1 in the 60 days after this one and 1 in the 30 days before it.
After
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00019pu. Read Fri, Oct 2, 2026, 3:29 AM UTC.