M5.8 earthquake 224 km W of Adak, Alaska
A magnitude 5.8 earthquake struck 224 km W of Adak, Alaska on Mon, Jul 4, 1966, 3:21 PM GMT-11 (02:21 UTC), 26 km (16 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
- 1966-07-05 02:21:44 UTC
- Depth
- 25.5 km (15.8 mi), shallow
- Epicenter
- 51.811° N, 179.887° 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
- ±0.33
- 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 iscgem845228. Read Tue, Sep 22, 2026, 8:03 AM UTC.