Alaska earthquakes

M3.3 earthquake 87 km NW of Nikolski, Alaska

A magnitude 3.3 earthquake struck 87 km NW of Nikolski, Alaska on Wed, May 12, 2021, 7:40 PM AKDT (03:40 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
3.3 (ml), minor
Local time
UTC
2021-05-13 03:40:08 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
53.506° N, 169.773° 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 3.0 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
138°
Stations used
32

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.8123 km W of Nikolski, Alaska · 1940 days ago · 111 km deep · 73 km away
  2. 3.0111 km S of Nikolski, Alaska · 1935 days ago · 136 km deep · 96 km away
  3. 3.244 km W of Nikolski, Alaska · 1929 days ago · 10 km deep · 73 km away
  4. 3.723 km NNW of Nikolski, Alaska · 1928 days ago · 175 km deep · 65 km away
  5. 3.554 km NNE of Nikolski, Alaska · 1927 days ago · 109 km deep · 77 km away
  6. 1.742 km WSW of Nikolski, Alaska · 1917 days ago · 18 km deep · 84 km away
  7. 2.147 km WSW of Nikolski, Alaska · 1916 days ago · 7 km deep · 80 km away
  8. 1.946 km WSW of Nikolski, Alaska · 1911 days ago · 7 km deep · 77 km away
  9. 3.863 km W of Nikolski, Alaska · 1911 days ago · 136 km deep · 51 km away
  10. 2.057 km NNW of Nikolski, Alaska · 1910 days ago · 159 km deep · 46 km away
  11. 3.088 km WSW of Nikolski, Alaska · 1910 days ago · 144 km deep · 91 km away

Before

  1. 3.581 km WNW of Nikolski, Alaska · 1967 days ago · 10 km deep · 28 km away
  2. 3.17 km NW of Nikolski, Alaska · 1978 days ago · 80 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000e4gu. Read Sat, Sep 26, 2026, 5:52 PM UTC.