Alaska earthquakes

M2.3 earthquake 199 km SSE of Adak, Alaska

A magnitude 2.3 earthquake struck 199 km SSE of Adak, Alaska on Tue, Sep 5, 2023, 9:52 PM HADT (06:52 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.3 188 km S 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
2023-09-06 06:52:42 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
50.280° N, 175.341° 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
26

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 3.3188 km S of Atka, Alaska · 1120 days ago · 10 km deep · 91 km away
  2. 2.9198 km S of Atka, Alaska · 1115 days ago · 10 km deep · 62 km away
  3. 2.8182 km S of Atka, Alaska · 1102 days ago · 10 km deep · 91 km away
  4. 3.0202 km SSE of Adak, Alaska · 1093 days ago · 10 km deep · 18 km away
  5. 2.7193 km S of Atka, Alaska · 1077 days ago · 10 km deep · 88 km away
  6. 2.5179 km S of Atka, Alaska · 1072 days ago · 10 km deep · 95 km away
  7. 2.8171 km S of Adak, Alaska · 1069 days ago · 10 km deep · 82 km away
  8. 2.1207 km SSE of Adak, Alaska · 1067 days ago · 12 km deep · 12 km away
  9. 2.5200 km S of Adak, Alaska · 1064 days ago · 10 km deep · 56 km away

Before

  1. 1.9146 km SSE of Adak, Alaska · 1138 days ago · 26 km deep · 53 km away
  2. 2.1192 km S of Atka, Alaska · 1138 days ago · 10 km deep · 80 km away
  3. 2.6175 km S of Adak, Alaska · 1140 days ago · 10 km deep · 80 km away
  4. 1.8151 km S of Adak, Alaska · 1143 days ago · 7 km deep · 95 km away
  5. 2.3192 km S of Adak, Alaska · 1153 days ago · 12 km deep · 64 km away
  6. 2.5156 km S of Atka, Alaska · 1153 days ago · 10 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak023bfwp94z. Read Sat, Oct 3, 2026, 5:16 PM UTC.