M5.8 earthquake 82 km SSE of Atka, Alaska
A magnitude 5.8 earthquake struck 82 km SSE of Atka, Alaska on Thu, Jul 21, 1966, 11:17 PM GMT-11 (10:17 UTC), 33 km (20 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
- 1966-07-22 10:17:22 UTC
- Depth
- 32.8 km (20.4 mi), shallow
- Epicenter
- 51.579° N, 173.543° 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 2.8 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 iscgem845727. Read Tue, Sep 29, 2026, 7:40 PM UTC.