Alaska earthquakes

M3.8 earthquake 123 km W of Nikolski, Alaska

A magnitude 3.8 earthquake struck 123 km W of Nikolski, Alaska on Fri, Jun 4, 2021, 2:44 AM HADT (11:44 UTC), 111 km (69 mi) below the surface.

A larger quake followed: M4.2 74 km WNW of Nikolski, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.8 (mb), minor
Local time
UTC
2021-06-04 11:44:35 UTC
Depth
110.7 km (68.8 mi), intermediate-depth
Epicenter
53.134° N, 170.675° 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.

Location uncertainty
About 8.1 km horizontally, 9.6 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
138°
Stations used
63

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.0111 km S of Nikolski, Alaska · 1937 days ago · 136 km deep · 68 km away
  2. 3.244 km W of Nikolski, Alaska · 1931 days ago · 10 km deep · 83 km away
  3. 1.742 km WSW of Nikolski, Alaska · 1919 days ago · 18 km deep · 92 km away
  4. 2.147 km WSW of Nikolski, Alaska · 1919 days ago · 7 km deep · 85 km away
  5. 3.375 km SW of Nikolski, Alaska · 1915 days ago · 34 km deep · 91 km away
  6. 1.946 km WSW of Nikolski, Alaska · 1914 days ago · 7 km deep · 84 km away
  7. 3.863 km W of Nikolski, Alaska · 1913 days ago · 136 km deep · 60 km away
  8. 3.088 km WSW of Nikolski, Alaska · 1912 days ago · 144 km deep · 60 km away
  9. 2.376 km NW of Nikolski, Alaska · 1904 days ago · 223 km deep · 77 km away
  10. 1.857 km SW of Nikolski, Alaska · 1893 days ago · 32 km deep · 97 km away
  11. 4.274 km WNW of Nikolski, Alaska · 1889 days ago · 112 km deep · 49 km away
  12. 2.051 km WSW of Nikolski, Alaska · 1887 days ago · 13 km deep · 90 km away
  13. 2.149 km SW of Nikolski, Alaska · 1885 days ago · 13 km deep · 96 km away
  14. 2.3139 km WSW of Nikolski, Alaska · 1885 days ago · 67 km deep · 77 km away

Before

  1. 3.387 km NW of Nikolski, Alaska · 1965 days ago · 10 km deep · 73 km away
  2. 3.581 km WNW of Nikolski, Alaska · 1970 days ago · 10 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e9nj. Read Tue, Sep 29, 2026, 4:03 AM UTC.