Alaska earthquakes

M2.5 earthquake 206 km SSE of Atka, Alaska

A magnitude 2.5 earthquake struck 206 km SSE of Atka, Alaska on Thu, Aug 10, 2017, 7:04 PM HADT (04:04 UTC), 25 km (15 mi) below the surface.

A larger quake followed: M3.3 181 km SSE of Atka, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.5 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-08-11 04:04:54 UTC
Depth
24.8 km (15.4 mi), shallow
Epicenter
50.479° N, 173.075° 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: 6 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 2.9248 km S of Atka, Alaska · 3334 days ago · 10 km deep · 63 km away
  2. 2.3151 km S of Atka, Alaska · 3310 days ago · 18 km deep · 90 km away
  3. 3.3181 km SSE of Atka, Alaska · 3295 days ago · 10 km deep · 27 km away
  4. 2.3166 km SSE of Atka, Alaska · 3289 days ago · 30 km deep · 42 km away
  5. 2.0111 km SSE of Atka, Alaska · 3288 days ago · 35 km deep · 95 km away
  6. 2.3151 km SSE of Atka, Alaska · 3282 days ago · 26 km deep · 62 km away

Before

  1. 2.3165 km SE of Atka, Alaska · 3349 days ago · 25 km deep · 91 km away
  2. 2.6173 km SSE of Atka, Alaska · 3368 days ago · 23 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak017a8v93md. Read Fri, Oct 2, 2026, 7:25 AM UTC.