M5.5 earthquake 62 km ESE of Nikolski, Alaska
A magnitude 5.5 earthquake struck 62 km ESE of Nikolski, Alaska on Tue, Mar 24, 1981, 8:21 AM GMT-10 (18:21 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
- 5.5 (mb), moderate
- Local time
- UTC
- 1981-03-24 18:21:27 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.673° N, 168.037° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.772 km SSE of Nikolski, AK · 16583 days ago · 33 km deep · 50 km away
- 4.188 km SW of Unalaska, Alaska · 16581 days ago · 33 km deep · 80 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001cv9 (also filed as gcmtb032481a, ushis3710, gcmt19810324182127, iscgem630350). Read Tue, Sep 22, 2026, 10:57 AM UTC.