Alaska earthquakes

M2.3 earthquake 165 km SE of Atka, Alaska

A magnitude 2.3 earthquake struck 165 km SE of Atka, Alaska on Mon, Jul 31, 2017, 9:46 PM HADT (06:46 UTC), 25 km (15 mi) below the surface.

A larger quake followed: M3.6 173 km ESE 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
2017-08-01 06:46:12 UTC
Depth
24.8 km (15.4 mi), shallow
Epicenter
51.195° N, 172.437° 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
16

Nearby

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

After

  1. 2.068 km ESE of Atka, Alaska · 3347 days ago · 45 km deep · 99 km away
  2. 2.5206 km SSE of Atka, Alaska · 3339 days ago · 25 km deep · 91 km away
  3. 3.6173 km ESE of Atka, Alaska · 3337 days ago · 58 km deep · 88 km away
  4. 2.5102 km SE of Atka, Alaska · 3334 days ago · 21 km deep · 65 km away
  5. 1.872 km SE of Atka, Alaska · 3334 days ago · 16 km deep · 95 km away
  6. 2.077 km SE of Atka, Alaska · 3310 days ago · 13 km deep · 88 km away
  7. 1.967 km SE of Atka, Alaska · 3307 days ago · 33 km deep · 98 km away
  8. 3.3181 km SSE of Atka, Alaska · 3295 days ago · 10 km deep · 87 km away
  9. 1.8101 km SE of Atka, Alaska · 3290 days ago · 13 km deep · 63 km away

Before

  1. 3.372 km ESE of Atka, Alaska · 3350 days ago · 58 km deep · 97 km away
  2. 2.873 km ESE of Atka, Alaska · 3356 days ago · 45 km deep · 95 km away
  3. 2.590 km SSE of Atka, Alaska · 3359 days ago · 10 km deep · 81 km away
  4. 3.8104 km SE of Atka, Alaska · 3367 days ago · 10 km deep · 65 km away
  5. 2.172 km ESE of Atka, Alaska · 3367 days ago · 51 km deep · 96 km away
  6. 4.4107 km ESE of Atka, Alaska · 3367 days ago · 34 km deep · 81 km away
  7. 3.1172 km ESE of Atka, Alaska · 3376 days ago · 37 km deep · 66 km away
  8. 3.6109 km ESE of Atka, Alaska · 3376 days ago · 38 km deep · 75 km away
  9. 2.6179 km SSE of Atka, Alaska · 3378 days ago · 10 km deep · 67 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0179sdber3 (also filed as ak16563786). Read Fri, Oct 2, 2026, 7:25 AM UTC.