Alaska earthquakes

M2.8 earthquake 30 km SE of Nelson Lagoon, Alaska

A magnitude 2.8 earthquake struck 30 km SE of Nelson Lagoon, Alaska on Tue, Aug 21, 2018, 12:08 PM AKDT (20:08 UTC), 164 km (102 mi) below the surface.

A larger quake followed: M3.9 54 km SW of Nelson Lagoon, Alaska. This one was a foreshock.

Sand Point forecastMore in Alaska

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
2018-08-21 20:08:50 UTC
Depth
163.9 km (101.9 mi), intermediate-depth
Epicenter
55.813° N, 160.843° 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 5.4 km horizontally, 6.5 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
84°
Stations used
34

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.427 km ENE of Sand Point, Alaska · 2961 days ago · 62 km deep · 65 km away
  2. 1.937 km NNW of Sand Point, Alaska · 2960 days ago · 88 km deep · 21 km away
  3. 2.747 km ENE of Sand Point, Alaska · 2959 days ago · 10 km deep · 74 km away
  4. 2.860 km SW of Nelson Lagoon, Alaska · 2957 days ago · 180 km deep · 71 km away
  5. 1.953 km W of Nelson Lagoon, Alaska · 2954 days ago · 14 km deep · 77 km away
  6. 2.621 km NNW of Nelson Lagoon, Alaska · 2952 days ago · 198 km deep · 50 km away
  7. 1.747 km E of Sand Point, Alaska · 2950 days ago · 7 km deep · 81 km away
  8. 2.457 km WNW of Ivanof Bay, Alaska · 2947 days ago · 153 km deep · 50 km away
  9. 2.151 km NNE of King Cove, Alaska · 2941 days ago · 23 km deep · 76 km away
  10. 2.553 km NNE of King Cove, Alaska · 2941 days ago · 25 km deep · 75 km away
  11. 2.317 km SW of Sand Point, Alaska · 2938 days ago · 70 km deep · 64 km away
  12. 2.26 km NNW of Sand Point, Alaska · 2938 days ago · 76 km deep · 50 km away
  13. 2.941 km NE of Cold Bay, Alaska · 2936 days ago · 161 km deep · 97 km away
  14. 1.851 km S of Nelson Lagoon, Alaska · 2933 days ago · 109 km deep · 43 km away
  15. 1.925 km W of Ivanof Bay, Alaska · 2929 days ago · 110 km deep · 60 km away
  16. 1.741 km S of Sand Point, Alaska · 2929 days ago · 14 km deep · 96 km away
  17. 1.718 km SSE of Sand Point, Alaska · 2928 days ago · 13 km deep · 76 km away
  18. 1.543 km ENE of King Cove, Alaska · 2927 days ago · 78 km deep · 86 km away
  19. 2.634 km SW of Nelson Lagoon, Alaska · 2925 days ago · 170 km deep · 50 km away
  20. 3.954 km SW of Nelson Lagoon, Alaska · 2919 days ago · 168 km deep · 66 km away
  21. 3.730 km NW of Nelson Lagoon, Alaska · 2910 days ago · 202 km deep · 61 km away
  22. 1.762 km NE of King Cove, Alaska · 2908 days ago · 7 km deep · 63 km away
  23. 2.946 km SE of Nelson Lagoon, Alaska · 2907 days ago · 139 km deep · 17 km away
  24. 2.611 km WNW of Ivanof Bay, Alaska · 2907 days ago · 107 km deep · 75 km away

Before

  1. 1.946 km SW of Sand Point, Alaska · 2967 days ago · 65 km deep · 88 km away
  2. 2.255 km NE of King Cove, Alaska · 2968 days ago · 117 km deep · 69 km away
  3. 2.846 km SSW of Ivanof Bay, Alaska · 2968 days ago · 5 km deep · 78 km away
  4. 2.338 km NE of King Cove, Alaska · 2968 days ago · 125 km deep · 88 km away
  5. 2.444 km SE of Nelson Lagoon, Alaska · 2969 days ago · 137 km deep · 14 km away
  6. 2.325 km S of Ivanof Bay, Alaska · 2972 days ago · 94 km deep · 91 km away
  7. 3.0Alaska Peninsula · 2972 days ago · 132 km deep · 93 km away
  8. 1.914 km N of Sand Point, Alaska · 2973 days ago · 71 km deep · 44 km away
  9. 2.021 km S of Sand Point, Alaska · 2981 days ago · 50 km deep · 78 km away
  10. 1.941 km S of Nelson Lagoon, Alaska · 2988 days ago · 111 km deep · 27 km away
  11. 3.026 km E of Nelson Lagoon, Alaska · 2989 days ago · 181 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000hgw0 (also filed as ak018apo6cyh, ak20135312, aacse018apo6cyh). Read Wed, Sep 30, 2026, 7:56 AM UTC.