M5.1 earthquake 266 km SE of Atka, Alaska
A magnitude 5.1 earthquake struck 266 km SE of Atka, Alaska on Wed, Sep 28, 1983, 4:07 AM GMT-10 (14:07 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1983-09-28 14:07:19 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 50.797° N, 171.089° 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
Nearby
Within 100 km, magnitude 2.1 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 usp0001yqa. Read Tue, Sep 22, 2026, 10:29 AM UTC.