Alaska earthquakes

M3.1 earthquake 172 km S of Atka, Alaska

A magnitude 3.1 earthquake struck 172 km S of Atka, Alaska on Sun, Feb 5, 2023, 3:00 AM HAST (13:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 177 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
3.1 (ml), minor
Local time
UTC
2023-02-05 13:00:52 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.673° N, 173.762° 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.

Location uncertainty
About 3.1 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
248°, 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 14 in the 30 days before it.

After

  1. 2.2156 km SE of Adak, Alaska · 1331 days ago · 24 km deep · 100 km away
  2. 4.3177 km SSE of Atka, Alaska · 1331 days ago · 10 km deep · 29 km away
  3. 2.3123 km SSE of Atka, Alaska · 1331 days ago · 20 km deep · 52 km away
  4. 3.1187 km SSE of Atka, Alaska · 1330 days ago · 10 km deep · 62 km away
  5. 2.9196 km SSE of Atka, Alaska · 1330 days ago · 10 km deep · 55 km away
  6. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1329 days ago · 10 km deep · 53 km away
  7. 3.3208 km SSE of Atka, Alaska · 1319 days ago · 10 km deep · 78 km away
  8. 3.4184 km SSE of Atka, Alaska · 1309 days ago · 10 km deep · 27 km away
  9. 3.2140 km SSE of Atka, Alaska · 1307 days ago · 10 km deep · 55 km away
  10. 3.1163 km S of Atka, Alaska · 1307 days ago · 10 km deep · 30 km away
  11. 3.5158 km S of Atka, Alaska · 1294 days ago · 10 km deep · 23 km away
  12. 2.7172 km S of Atka, Alaska · 1293 days ago · 10 km deep · 3 km away
  13. 2.8121 km SSE of Atka, Alaska · 1293 days ago · 10 km deep · 56 km away
  14. 2.6128 km S of Atka, Alaska · 1292 days ago · 10 km deep · 47 km away
  15. 2.9112 km SE of Atka, Alaska · 1292 days ago · 35 km deep · 86 km away
  16. 3.4Andreanof Islands, Aleutian Islands, Alaska · 1289 days ago · 10 km deep · 79 km away
  17. 2.1Andreanof Islands, Aleutian Islands, Alaska · 1280 days ago · 20 km deep · 86 km away
  18. 3.0Andreanof Islands, Aleutian Islands, Alaska · 1274 days ago · 10 km deep · 75 km away

Before

  1. 2.8Andreanof Islands, Aleutian Islands, Alaska · 1333 days ago · 10 km deep · 23 km away
  2. 3.2162 km SSE of Atka, Alaska · 1334 days ago · 10 km deep · 38 km away
  3. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1336 days ago · 10 km deep · 21 km away
  4. 3.6213 km SSE of Atka, Alaska · 1338 days ago · 10 km deep · 84 km away
  5. 2.9113 km SSE of Atka, Alaska · 1339 days ago · 10 km deep · 62 km away
  6. 3.0153 km S of Atka, Alaska · 1341 days ago · 10 km deep · 29 km away
  7. 3.2204 km SSE of Atka, Alaska · 1342 days ago · 10 km deep · 71 km away
  8. 3.0194 km SSE of Atka, Alaska · 1342 days ago · 10 km deep · 61 km away
  9. 2.7134 km S of Atka, Alaska · 1342 days ago · 10 km deep · 43 km away
  10. 5.1208 km SSE of Atka, Alaska · 1343 days ago · 29 km deep · 80 km away
  11. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1346 days ago · 10 km deep · 40 km away
  12. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1352 days ago · 10 km deep · 65 km away
  13. 2.9109 km S of Atka, Alaska · 1354 days ago · 10 km deep · 64 km away
  14. 2.7195 km S of Atka, Alaska · 1359 days ago · 10 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000jp9b (also filed as ak0231nr38x5). Read Wed, Sep 30, 2026, 3:33 PM UTC.