M5.3 earthquake 223 km ESE of Atka, Alaska
A magnitude 5.3 earthquake struck 223 km ESE of Atka, Alaska on Fri, Jun 4, 1971, 1:22 PM GMT-10 (23:22 UTC), 25 km (15 mi) below the surface.
A larger quake followed: M5.7 158 km SW of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.3 (mw), moderate
- Local time
- UTC
- 1971-06-04 23:22:50 UTC
- Depth
- 24.6 km (15.3 mi), shallow
- Epicenter
- 51.380° N, 171.236° 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 2.3 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.5146 km SW of Nikolski, Alaska · 20200 days ago · 25 km deep · 97 km away
- 5.4161 km SW of Nikolski, Alaska · 20183 days ago · 24 km deep · 76 km away
- 5.7158 km SW of Nikolski, Alaska · 20160 days ago · 36 km deep · 79 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem783160. Read Wed, Sep 30, 2026, 1:34 AM UTC.