M5.8 earthquake 86 km SSE of Adak, Alaska
A magnitude 5.8 earthquake struck 86 km SSE of Adak, Alaska on Wed, Feb 21, 1968, 10:07 AM GMT-11 (21:07 UTC), 13 km (8 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.8 (mw), moderate
- Local time
- UTC
- 1968-02-21 21:07:53 UTC
- Depth
- 13.4 km (8.3 mi), shallow
- Epicenter
- 51.143° N, 176.190° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 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 iscgem826490. Read Tue, Sep 22, 2026, 2:49 PM UTC.