Alaska earthquakes

M2.5 earthquake 15 km NW of Nelson Lagoon, Alaska

A magnitude 2.5 earthquake struck 15 km NW of Nelson Lagoon, Alaska on Thu, Mar 25, 2021, 9:28 PM AKDT (05:28 UTC), 194 km (121 mi) below the surface.

A larger quake followed: M2.7 17 km WNW of Nelson Lagoon, 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
2.5 (ml), micro
Local time
UTC
2021-03-26 05:28:58 UTC
Depth
194.1 km (120.6 mi), intermediate-depth
Epicenter
56.079° N, 161.404° 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 8.2 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
121°
Stations used
37

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.843 km ESE of Nelson Lagoon, Alaska · 2008 days ago · 26 km deep · 58 km away
  2. 2.235 km ENE of King Cove, Alaska · 2008 days ago · 116 km deep · 98 km away
  3. 2.122 km W of Ivanof Bay, Alaska · 1996 days ago · 12 km deep · 100 km away
  4. 1.737 km WNW of Sand Point, Alaska · 1994 days ago · 86 km deep · 69 km away
  5. 2.717 km WNW of Nelson Lagoon, Alaska · 1990 days ago · 204 km deep · 3 km away
  6. 1.928 km N of Sand Point, Alaska · 1987 days ago · 81 km deep · 79 km away
  7. 2.161 km ENE of King Cove, Alaska · 1985 days ago · 92 km deep · 84 km away
  8. 2.853 km SW of Nelson Lagoon, Alaska · 1978 days ago · 168 km deep · 55 km away
  9. 3.049 km NE of King Cove, Alaska · 1973 days ago · 119 km deep · 80 km away

Before

  1. 1.838 km NNE of King Cove, Alaska · 2012 days ago · 119 km deep · 89 km away
  2. 2.063 km SSW of Nelson Lagoon, Alaska · 2017 days ago · 154 km deep · 68 km away
  3. 2.833 km ESE of Nelson Lagoon, Alaska · 2019 days ago · 21 km deep · 48 km away
  4. 1.9Alaska Peninsula · 2023 days ago · 116 km deep · 71 km away
  5. 2.036 km NW of Sand Point, Alaska · 2023 days ago · 90 km deep · 66 km away
  6. 2.531 km NNW of Nelson Lagoon, Alaska · 2024 days ago · 210 km deep · 21 km away
  7. 2.341 km NNW of Sand Point, Alaska · 2026 days ago · 95 km deep · 60 km away
  8. 2.136 km NNE of King Cove, Alaska · 2030 days ago · 119 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e3x0 (also filed as ak0213wntsma). Read Thu, Sep 24, 2026, 9:39 AM UTC.