M4.6 earthquake 183 km WSW of Nikolski, Alaska
A magnitude 4.6 earthquake struck 183 km WSW of Nikolski, Alaska on Sun, Feb 22, 1981, 7:26 PM GMT-11 (06:26 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
- 4.6 (mb), light
- Local time
- UTC
- 1981-02-23 06:26:30 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.175° N, 171.260° 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 1.6 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001cbb. Read Tue, Sep 22, 2026, 4:22 AM UTC.