Alaska earthquakes

M2.3 earthquake 171 km SSE of Atka, Alaska

A magnitude 2.3 earthquake struck 171 km SSE of Atka, Alaska on Thu, Aug 18, 2016, 5:08 AM HADT (14:08 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M4.8 88 km SSE of Atka, Alaska. This one was a foreshock.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2016-08-18 14:08:59 UTC
Depth
22.8 km (14.2 mi), shallow
Epicenter
50.832° N, 173.042° 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
12

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 3.4Andreanof Islands, Aleutian Islands, Alaska · 3698 days ago · 10 km deep · 94 km away
  2. 2.988 km SE of Atka, Alaska · 3697 days ago · 17 km deep · 88 km away
  3. 2.190 km SSE of Atka, Alaska · 3696 days ago · 41 km deep · 83 km away
  4. 1.790 km S of Atka, Alaska · 3689 days ago · 38 km deep · 94 km away
  5. 2.473 km SSE of Atka, Alaska · 3688 days ago · 2 km deep · 98 km away
  6. 3.985 km S of Atka, Alaska · 3683 days ago · 46 km deep · 93 km away
  7. 2.786 km S of Atka, Alaska · 3682 days ago · 26 km deep · 98 km away
  8. 4.888 km SSE of Atka, Alaska · 3679 days ago · 42 km deep · 83 km away
  9. 3.896 km SE of Atka, Alaska · 3670 days ago · 59 km deep · 97 km away
  10. 2.6160 km SSE of Atka, Alaska · 3657 days ago · 28 km deep · 12 km away
  11. 3.8135 km SE of Atka, Alaska · 3646 days ago · 50 km deep · 84 km away
  12. 3.1127 km S of Atka, Alaska · 3645 days ago · 39 km deep · 68 km away
  13. 4.1113 km SE of Atka, Alaska · 3644 days ago · 42 km deep · 64 km away
  14. 2.8181 km SSE of Atka, Alaska · 3642 days ago · 26 km deep · 42 km away
  15. 4.1115 km S of Atka, Alaska · 3639 days ago · 31 km deep · 79 km away

Before

  1. 2.980 km SE of Atka, Alaska · 3699 days ago · 38 km deep · 96 km away
  2. 2.0133 km S of Atka, Alaska · 3706 days ago · 21 km deep · 61 km away
  3. 2.1182 km SSE of Atka, Alaska · 3707 days ago · 35 km deep · 32 km away
  4. 2.0151 km S of Atka, Alaska · 3709 days ago · 25 km deep · 55 km away
  5. 2.1120 km SE of Atka, Alaska · 3712 days ago · 26 km deep · 65 km away
  6. 4.088 km SSE of Atka, Alaska · 3713 days ago · 35 km deep · 84 km away
  7. 3.590 km SE of Atka, Alaska · 3715 days ago · 35 km deep · 89 km away
  8. 2.588 km SE of Atka, Alaska · 3719 days ago · 38 km deep · 86 km away
  9. 2.588 km SSE of Atka, Alaska · 3722 days ago · 35 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak016am9j2ub. Read Sat, Oct 3, 2026, 8:56 PM UTC.