Alaska earthquakes

M3.5 earthquake 26 km SW of Unalaska, Alaska

A magnitude 3.5 earthquake struck 26 km SW of Unalaska, Alaska on Tue, May 16, 2023, 8:26 AM AKDT (16:26 UTC), 79 km (49 mi) below the surface.

A larger quake followed: M4.1 71 km S of Akutan, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
3.5 (mb), minor
Local time
UTC
2023-05-16 16:26:21 UTC
Depth
79.4 km (49.3 mi), intermediate-depth
Epicenter
53.706° N, 166.822° 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 9.9 km horizontally, 5.5 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
184°, poorly surrounded by stations
Stations used
30

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 123 in the 60 days after this one and 106 in the 30 days before it.

After

  1. 2.645 km ESE of Unalaska, Alaska · 1231 days ago · 50 km deep · 59 km away
  2. 1.916 km N of Dutch Harbor, Alaska · 1231 days ago · 84 km deep · 41 km away
  3. 1.972 km S of Akutan, Alaska · 1230 days ago · 23 km deep · 82 km away
  4. 2.2102 km SSW of Unalaska, Alaska · 1230 days ago · 20 km deep · 82 km away
  5. 2.275 km SE of Unalaska, Alaska · 1228 days ago · 20 km deep · 82 km away
  6. 1.772 km WSW of Unalaska, Alaska · 1228 days ago · 7 km deep · 49 km away
  7. 1.577 km WSW of Unalaska, Alaska · 1228 days ago · 12 km deep · 53 km away
  8. 3.270 km S of Akutan, Alaska · 1228 days ago · 35 km deep · 81 km away
  9. 4.171 km S of Akutan, Alaska · 1228 days ago · 35 km deep · 85 km away
  10. 2.768 km S of Akutan, Alaska · 1228 days ago · 35 km deep · 81 km away
  11. 2.082 km WSW of Unalaska, Alaska · 1228 days ago · 106 km deep · 58 km away
  12. 4.0110 km SSW of Unalaska, Alaska · 1227 days ago · 40 km deep · 89 km away
  13. 1.597 km SSW of Unalaska, Alaska · 1227 days ago · 15 km deep · 73 km away
  14. 1.973 km SSW of Unalaska, Alaska · 1227 days ago · 46 km deep · 53 km away
  15. 2.099 km SSW of Unalaska, Alaska · 1226 days ago · 38 km deep · 75 km away
  16. 1.857 km SE of Unalaska, Alaska · 1226 days ago · 26 km deep · 68 km away
  17. 1.778 km SSW of Unalaska, Alaska · 1226 days ago · 45 km deep · 58 km away
  18. 2.690 km SSW of Unalaska, Alaska · 1225 days ago · 35 km deep · 69 km away
  19. 2.823 km ENE of Dutch Harbor, Alaska · 1225 days ago · 73 km deep · 49 km away
  20. 3.0Fox Islands, Aleutian Islands, Alaska · 1223 days ago · 73 km deep · 72 km away
  21. 1.92 km ESE of Unalaska, Alaska · 1223 days ago · 7 km deep · 28 km away
  22. 2.777 km SW of Unalaska, Alaska · 1222 days ago · 23 km deep · 51 km away
  23. 2.516 km ESE of Unalaska, Alaska · 1222 days ago · 85 km deep · 35 km away
  24. 2.371 km S of Unalaska, Alaska · 1222 days ago · 38 km deep · 52 km away
  25. 2.857 km SE of Unalaska, Alaska · 1221 days ago · 35 km deep · 61 km away
  26. 1.972 km WSW of Unalaska, Alaska · 1219 days ago · 13 km deep · 47 km away
  27. 1.796 km SW of Unalaska, Alaska · 1219 days ago · 51 km deep · 71 km away
  28. 2.238 km SSE of Akutan, Alaska · 1218 days ago · 60 km deep · 90 km away
  29. 1.957 km SSE of Unalaska, Alaska · 1218 days ago · 36 km deep · 57 km away
  30. 2.276 km SE of Unalaska, Alaska · 1218 days ago · 21 km deep · 77 km away
  31. 2.873 km SE of Unalaska, Alaska · 1217 days ago · 35 km deep · 81 km away
  32. 1.784 km SSW of Unalaska, Alaska · 1217 days ago · 26 km deep · 64 km away
  33. 2.051 km SW of Unalaska, Alaska · 1217 days ago · 121 km deep · 25 km away
  34. 2.153 km WSW of Unalaska, Alaska · 1217 days ago · 125 km deep · 32 km away
  35. 3.170 km S of Unalaska, Alaska · 1215 days ago · 35 km deep · 55 km away
  36. 2.086 km WSW of Unalaska, Alaska · 1214 days ago · 78 km deep · 62 km away
  37. 1.9111 km SSW of Unalaska, Alaska · 1214 days ago · 18 km deep · 87 km away
  38. 1.653 km SSE of Akutan, Alaska · 1213 days ago · 54 km deep · 82 km away
  39. 3.8Fox Islands, Aleutian Islands, Alaska · 1212 days ago · 37 km deep · 92 km away
  40. 1.9117 km S of Unalaska, Alaska · 1212 days ago · 18 km deep · 97 km away
  41. 3.095 km SSW of Unalaska, Alaska · 1211 days ago · 35 km deep · 72 km away
  42. 1.852 km S of Akutan, Alaska · 1211 days ago · 59 km deep · 66 km away
  43. 2.716 km SE of Unalaska, Alaska · 1210 days ago · 82 km deep · 33 km away
  44. 1.671 km SSE of Akutan, Alaska · 1209 days ago · 25 km deep · 90 km away
  45. 1.979 km SW of Unalaska, Alaska · 1209 days ago · 15 km deep · 53 km away
  46. 1.77 km SSW of Unalaska, Alaska · 1208 days ago · 95 km deep · 20 km away
  47. 1.686 km SSW of Unalaska, Alaska · 1208 days ago · 26 km deep · 65 km away
  48. 1.520 km ENE of Dutch Harbor, Alaska · 1208 days ago · 7 km deep · 47 km away
  49. 1.621 km ENE of Dutch Harbor, Alaska · 1208 days ago · 7 km deep · 47 km away
  50. 1.521 km ENE of Dutch Harbor, Alaska · 1208 days ago · 7 km deep · 48 km away
  51. 1.959 km SSE of Akutan, Alaska · 1207 days ago · 33 km deep · 90 km away
  52. 2.524 km E of Unalaska, Alaska · 1207 days ago · 10 km deep · 48 km away
  53. 2.6Fox Islands, Aleutian Islands, Alaska · 1207 days ago · 35 km deep · 72 km away
  54. 1.620 km ENE of Dutch Harbor, Alaska · 1206 days ago · 12 km deep · 48 km away
  55. 1.793 km E of Nikolski, Alaska · 1206 days ago · 56 km deep · 91 km away
  56. 1.835 km ESE of Unalaska, Alaska · 1206 days ago · 72 km deep · 55 km away
  57. 1.65 km N of Dutch Harbor, Alaska · 1205 days ago · 11 km deep · 32 km away
  58. 2.550 km SW of Unalaska, Alaska · 1204 days ago · 12 km deep · 23 km away
  59. 2.013 km NW of Akutan, Alaska · 1201 days ago · 102 km deep · 81 km away
  60. 1.9Fox Islands, Aleutian Islands, Alaska · 1201 days ago · 80 km deep · 12 km away

The first 60 of 123.

Before

  1. 2.071 km SSE of Akutan, Alaska · 1233 days ago · 20 km deep · 90 km away
  2. 2.466 km SSW of Unalaska, Alaska · 1233 days ago · 88 km deep · 43 km away
  3. 3.091 km SSW of Unalaska, Alaska · 1234 days ago · 35 km deep · 70 km away
  4. 3.576 km SSW of Unalaska, Alaska · 1234 days ago · 53 km deep · 53 km away
  5. 1.830 km E of Unalaska, Alaska · 1234 days ago · 74 km deep · 54 km away
  6. 2.050 km SW of Unalaska, Alaska · 1234 days ago · 13 km deep · 24 km away
  7. 1.671 km S of Akutan, Alaska · 1234 days ago · 24 km deep · 81 km away
  8. 1.919 km SE of Unalaska, Alaska · 1235 days ago · 86 km deep · 31 km away
  9. 2.624 km NE of Dutch Harbor, Alaska · 1235 days ago · 93 km deep · 52 km away
  10. 1.777 km SSE of Unalaska, Alaska · 1236 days ago · 26 km deep · 69 km away
  11. 1.731 km W of Dutch Harbor, Alaska · 1236 days ago · 27 km deep · 24 km away
  12. 2.5Fox Islands, Aleutian Islands, Alaska · 1237 days ago · 69 km deep · 56 km away
  13. 1.649 km SW of Unalaska, Alaska · 1238 days ago · 13 km deep · 24 km away
  14. 2.4Fox Islands, Aleutian Islands, Alaska · 1238 days ago · 22 km deep · 26 km away
  15. 1.949 km SW of Unalaska, Alaska · 1238 days ago · 17 km deep · 23 km away
  16. 2.050 km SW of Unalaska, Alaska · 1239 days ago · 13 km deep · 24 km away
  17. 1.949 km SW of Unalaska, Alaska · 1239 days ago · 18 km deep · 23 km away
  18. 1.748 km SW of Unalaska, Alaska · 1239 days ago · 13 km deep · 22 km away
  19. 2.584 km SSW of Unalaska, Alaska · 1239 days ago · 35 km deep · 62 km away
  20. 2.060 km SW of Unalaska, Alaska · 1239 days ago · 78 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kcbu (also filed as ak023696rr58). Read Tue, Sep 29, 2026, 9:48 PM UTC.