M5.4 earthquake 71 km S of Atka, Alaska
A magnitude 5.4 earthquake struck 71 km S of Atka, Alaska on Mon, Jul 12, 1971, 12:57 PM GMT-10 (22:57 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.4 (mw), moderate
- Local time
- UTC
- 1971-07-12 22:57:10 UTC
- Depth
- 34.8 km (21.6 mi), shallow
- Epicenter
- 51.557° N, 174.075° 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
- ±0.25
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.4 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 iscgem782147. Read Tue, Sep 22, 2026, 11:32 PM UTC.