M5.5 earthquake 75 km SSE of Adak, Alaska
A magnitude 5.5 earthquake struck 75 km SSE of Adak, Alaska on Sun, Feb 25, 1968, 7:08 AM GMT-11 (18:08 UTC), 34 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 (mw), moderate
- Local time
- UTC
- 1968-02-25 18:08:19 UTC
- Depth
- 34.4 km (21.4 mi), shallow
- Epicenter
- 51.280° N, 176.121° 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: 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 iscgem826717. Read Wed, Sep 23, 2026, 3:33 AM UTC.