M4.3 earthquake 167 km W of Nikolski, Alaska
A magnitude 4.3 earthquake struck 167 km W of Nikolski, Alaska on Sun, Apr 4, 1982, 12:40 PM GMT-11 (23:40 UTC), 101 km (63 mi) below the surface.
A larger quake followed: M4.4 145 km SW of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1982-04-04 23:40:07 UTC
- Depth
- 101.0 km (62.8 mi), intermediate-depth
- Epicenter
- 52.878° N, 171.343° 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.
Nearby
Within 100 km, magnitude 1.5 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 usp0001khp. Read Tue, Sep 22, 2026, 12:12 PM UTC.