Alaska earthquakes

M3.1 earthquake 42 km NE of Nelson Lagoon, Alaska

A magnitude 3.1 earthquake struck 42 km NE of Nelson Lagoon, Alaska on Fri, Sep 17, 2021, 2:04 PM AKDT (22:04 UTC), 180 km (112 mi) below the surface.

A larger quake followed: M3.3 15 km NNW 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
3.1 (ml), minor
Local time
UTC
2021-09-17 22:04:20 UTC
Depth
179.9 km (111.8 mi), intermediate-depth
Epicenter
56.231° N, 160.663° 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.

Stations used
64

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.95 km SSW of Nelson Lagoon, Alaska · 1834 days ago · 172 km deep · 48 km away
  2. 1.820 km SSE of Ivanof Bay, Alaska · 1834 days ago · 60 km deep · 99 km away
  3. 2.6Alaska Peninsula · 1833 days ago · 159 km deep · 45 km away
  4. 1.920 km WNW of Chignik Lake, Alaska · 1833 days ago · 93 km deep · 99 km away
  5. 2.122 km N of Ivanof Bay, Alaska · 1819 days ago · 4 km deep · 72 km away
  6. 1.527 km W of Chignik Lake, Alaska · 1808 days ago · 9 km deep · 91 km away
  7. 2.420 km W of Ivanof Bay, Alaska · 1797 days ago · 119 km deep · 67 km away
  8. 1.841 km NNE of Sand Point, Alaska · 1792 days ago · 107 km deep · 62 km away
  9. 2.835 km SW of Nelson Lagoon, Alaska · 1787 days ago · 206 km deep · 78 km away
  10. 2.930 km SSW of Ivanof Bay, Alaska · 1786 days ago · 71 km deep · 93 km away
  11. 2.723 km SW of Ivanof Bay, Alaska · 1786 days ago · 92 km deep · 80 km away
  12. 3.315 km NNW of Nelson Lagoon, Alaska · 1785 days ago · 198 km deep · 41 km away

Before

  1. 1.622 km W of Ivanof Bay, Alaska · 1847 days ago · 9 km deep · 65 km away
  2. 1.929 km SW of Ivanof Bay, Alaska · 1847 days ago · 5 km deep · 79 km away
  3. 1.753 km SW of Nelson Lagoon, Alaska · 1854 days ago · 120 km deep · 95 km away
  4. 1.814 km N of Sand Point, Alaska · 1854 days ago · 76 km deep · 85 km away
  5. 1.614 km NNW of Sand Point, Alaska · 1859 days ago · 79 km deep · 87 km away
  6. 2.214 km W of Nelson Lagoon, Alaska · 1859 days ago · 207 km deep · 55 km away
  7. 2.136 km NW of Ivanof Bay, Alaska · 1860 days ago · 151 km deep · 50 km away
  8. 1.542 km WNW of Sand Point, Alaska · 1861 days ago · 93 km deep · 84 km away
  9. 2.046 km N of Sand Point, Alaska · 1864 days ago · 99 km deep · 54 km away
  10. 1.618 km S of Nelson Lagoon, Alaska · 1866 days ago · 160 km deep · 57 km away
  11. 2.915 km NW of Nelson Lagoon, Alaska · 1867 days ago · 203 km deep · 44 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak021bycuo9t (also filed as us6000fudl). Read Tue, Sep 29, 2026, 8:15 AM UTC.