Alaska earthquakes

M2.3 earthquake 231 km SSE of Atka, Alaska

A magnitude 2.3 earthquake struck 231 km SSE of Atka, Alaska on Fri, Sep 25, 2020, 9:01 PM HADT (06:01 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.1 180 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
2020-09-26 06:01:23 UTC
Depth
7.6 km (4.7 mi), shallow
Epicenter
50.195° N, 173.290° 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
23

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.2214 km S of Atka, Alaska · 2197 days ago · 8 km deep · 29 km away
  2. 1.7152 km S of Atka, Alaska · 2197 days ago · 5 km deep · 95 km away
  3. 4.1180 km SSE of Atka, Alaska · 2187 days ago · 24 km deep · 57 km away
  4. 2.3171 km SSE of Atka, Alaska · 2181 days ago · 12 km deep · 60 km away
  5. 2.6194 km SSE of Atka, Alaska · 2173 days ago · 10 km deep · 39 km away
  6. 2.0161 km SSE of Atka, Alaska · 2164 days ago · 7 km deep · 70 km away
  7. 2.6166 km SSE of Atka, Alaska · 2158 days ago · 10 km deep · 76 km away
  8. 2.9191 km SSE of Atka, Alaska · 2150 days ago · 10 km deep · 50 km away
  9. 2.4161 km SSE of Atka, Alaska · 2147 days ago · 10 km deep · 71 km away
  10. 3.2206 km SSE of Atka, Alaska · 2146 days ago · 27 km deep · 27 km away

Before

  1. 2.6195 km S of Atka, Alaska · 2200 days ago · 10 km deep · 85 km away
  2. 2.8191 km S of Atka, Alaska · 2201 days ago · 10 km deep · 89 km away
  3. 2.7176 km SSE of Atka, Alaska · 2207 days ago · 10 km deep · 57 km away
  4. 2.2211 km SSE of Atka, Alaska · 2209 days ago · 10 km deep · 23 km away
  5. 2.7166 km SSE of Atka, Alaska · 2209 days ago · 10 km deep · 72 km away
  6. 2.2148 km S of Atka, Alaska · 2215 days ago · 14 km deep · 88 km away
  7. 3.1162 km SSE of Atka, Alaska · 2221 days ago · 21 km deep · 69 km away
  8. 2.8190 km SSE of Atka, Alaska · 2225 days ago · 10 km deep · 57 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak020cemokfp. Read Fri, Oct 2, 2026, 8:45 AM UTC.