Alaska earthquakes

M3.5 earthquake 81 km WNW of Nikolski, Alaska

A magnitude 3.5 earthquake struck 81 km WNW of Nikolski, Alaska on Sat, May 8, 2021, 2:43 AM AKDT (10:43 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 123 km W 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
3.5 (mb), minor
Local time
UTC
2021-05-08 10:43:58 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
53.279° N, 169.940° 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 5.2 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
112°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.387 km NW of Nikolski, Alaska · 1960 days ago · 10 km deep · 28 km away
  2. 3.8123 km W of Nikolski, Alaska · 1938 days ago · 111 km deep · 52 km away
  3. 3.0111 km S of Nikolski, Alaska · 1932 days ago · 136 km deep · 69 km away
  4. 3.244 km W of Nikolski, Alaska · 1926 days ago · 10 km deep · 54 km away
  5. 3.723 km NNW of Nikolski, Alaska · 1926 days ago · 175 km deep · 62 km away
  6. 3.554 km NNE of Nikolski, Alaska · 1924 days ago · 109 km deep · 88 km away
  7. 1.742 km WSW of Nikolski, Alaska · 1914 days ago · 18 km deep · 65 km away
  8. 2.147 km WSW of Nikolski, Alaska · 1914 days ago · 7 km deep · 59 km away
  9. 3.375 km SW of Nikolski, Alaska · 1910 days ago · 34 km deep · 84 km away
  10. 1.946 km WSW of Nikolski, Alaska · 1909 days ago · 7 km deep · 57 km away
  11. 3.863 km W of Nikolski, Alaska · 1909 days ago · 136 km deep · 28 km away
  12. 2.057 km NNW of Nikolski, Alaska · 1908 days ago · 159 km deep · 59 km away
  13. 3.088 km WSW of Nikolski, Alaska · 1907 days ago · 144 km deep · 64 km away

Before

  1. 3.17 km NW of Nikolski, Alaska · 1976 days ago · 80 km deep · 74 km away
  2. 2.97 km N of Nikolski, Alaska · 1992 days ago · 70 km deep · 79 km away
  3. 3.635 km W of Nikolski, Alaska · 1994 days ago · 143 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e32b. Read Thu, Sep 24, 2026, 10:06 AM UTC.