Alaska earthquakes

M2.9 earthquake 169 km S of Atka, Alaska

A magnitude 2.9 earthquake struck 169 km S of Atka, Alaska on Thu, Nov 16, 2023, 12:28 AM HAST (10:28 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.9 124 km SSW 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
2.9 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-11-16 10:28:09 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.675° N, 174.039° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
2.9ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.9ML, local (Richter)Alaska Earthquake CenterPreliminary

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 8.0 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
296°, poorly surrounded by stations
Stations used
11

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 3.2198 km SE of Adak, Alaska · 1041 days ago · 10 km deep · 66 km away
  2. 3.0159 km SSE of Atka, Alaska · 1037 days ago · 10 km deep · 65 km away
  3. 3.8177 km SSE of Adak, Alaska · 1030 days ago · 10 km deep · 95 km away
  4. 2.8165 km SSE of Atka, Alaska · 1030 days ago · 10 km deep · 27 km away
  5. 2.8185 km S of Atka, Alaska · 1024 days ago · 10 km deep · 43 km away
  6. 3.3128 km SE of Adak, Alaska · 1015 days ago · 35 km deep · 97 km away
  7. 2.7178 km S of Atka, Alaska · 1014 days ago · 10 km deep · 11 km away
  8. 3.2195 km SSE of Atka, Alaska · 1013 days ago · 10 km deep · 89 km away
  9. 2.3224 km SSE of Adak, Alaska · 1012 days ago · 10 km deep · 83 km away
  10. 2.7182 km S of Atka, Alaska · 1012 days ago · 10 km deep · 14 km away
  11. 2.5101 km SSE of Atka, Alaska · 1011 days ago · 35 km deep · 86 km away
  12. 2.3131 km SE of Adak, Alaska · 1008 days ago · 26 km deep · 94 km away
  13. 4.1115 km ESE of Adak, Alaska · 1007 days ago · 39 km deep · 99 km away
  14. 3.875 km S of Atka, Alaska · 1005 days ago · 45 km deep · 96 km away
  15. 3.0207 km S of Atka, Alaska · 1004 days ago · 10 km deep · 56 km away
  16. 4.9124 km SSW of Atka, Alaska · 996 days ago · 10 km deep · 86 km away
  17. 3.3129 km SSW of Atka, Alaska · 995 days ago · 35 km deep · 85 km away
  18. 3.8129 km SSW of Atka, Alaska · 995 days ago · 25 km deep · 88 km away

Before

  1. 3.1155 km SSE of Atka, Alaska · 1053 days ago · 10 km deep · 74 km away
  2. 2.978 km SSE of Atka, Alaska · 1055 days ago · 35 km deep · 100 km away
  3. 3.2201 km SSW of Atka, Alaska · 1058 days ago · 24 km deep · 64 km away
  4. 2.1207 km SSE of Adak, Alaska · 1065 days ago · 12 km deep · 94 km away
  5. 2.7164 km SSE of Atka, Alaska · 1067 days ago · 10 km deep · 50 km away
  6. 2.5179 km S of Atka, Alaska · 1070 days ago · 10 km deep · 11 km away
  7. 2.7193 km S of Atka, Alaska · 1075 days ago · 10 km deep · 25 km away
  8. 2.7151 km S of Atka, Alaska · 1078 days ago · 10 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000lf8f (also filed as ak023epe3eyv). Read Thu, Oct 1, 2026, 6:05 PM UTC.