Alaska earthquakes

M2.8 earthquake 115 km WNW of Nikolski, Alaska

A magnitude 2.8 earthquake struck 115 km WNW of Nikolski, Alaska on Wed, Mar 24, 2021, 12:03 AM HADT (09:03 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M2.9 119 km WSW 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
2.8 (ml), micro
Local time
UTC
2021-03-24 09:03:44 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
53.160° N, 170.545° 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 4.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.15
Depth from
Operator assigned
Station coverage gap
174°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 2.9119 km WSW of Nikolski, Alaska · 2010 days ago · 117 km deep · 49 km away
  2. 4.872 km WSW of Nikolski, Alaska · 2008 days ago · 12 km deep · 60 km away
  3. 3.766 km WSW of Nikolski, Alaska · 2008 days ago · 10 km deep · 61 km away
  4. 3.5Fox Islands, Aleutian Islands, Alaska · 2008 days ago · 9 km deep · 48 km away
  5. 2.370 km WSW of Nikolski, Alaska · 2007 days ago · 7 km deep · 65 km away
  6. 3.568 km W of Nikolski, Alaska · 2007 days ago · 3 km deep · 54 km away
  7. 2.965 km W of Nikolski, Alaska · 2007 days ago · 10 km deep · 60 km away
  8. 3.266 km WSW of Nikolski, Alaska · 2007 days ago · 10 km deep · 68 km away
  9. 3.375 km WSW of Nikolski, Alaska · 2007 days ago · 10 km deep · 57 km away
  10. 3.244 km WSW of Nikolski, Alaska · 2006 days ago · 31 km deep · 85 km away
  11. 3.381 km WSW of Nikolski, Alaska · 2004 days ago · 8 km deep · 54 km away
  12. 2.142 km WSW of Nikolski, Alaska · 2000 days ago · 16 km deep · 89 km away
  13. 3.497 km W of Nikolski, Alaska · 1999 days ago · 172 km deep · 21 km away
  14. 3.635 km W of Nikolski, Alaska · 1993 days ago · 143 km deep · 82 km away
  15. 3.0160 km WSW of Nikolski, Alaska · 1987 days ago · 60 km deep · 96 km away
  16. 4.9128 km WSW of Nikolski, Alaska · 1969 days ago · 54 km deep · 84 km away
  17. 3.581 km WNW of Nikolski, Alaska · 1965 days ago · 10 km deep · 42 km away
  18. 3.387 km NW of Nikolski, Alaska · 1960 days ago · 10 km deep · 64 km away

Before

  1. 3.1105 km WSW of Nikolski, Alaska · 2016 days ago · 137 km deep · 46 km away
  2. 2.164 km SW of Nikolski, Alaska · 2022 days ago · 51 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dw02. Read Thu, Sep 24, 2026, 5:23 AM UTC.