Alaska earthquakes

M2.8 earthquake 58 km ENE of Adak, Alaska

A magnitude 2.8 earthquake struck 58 km ENE of Adak, Alaska on Mon, Mar 27, 2023, 6:40 AM HADT (15:40 UTC), 190 km (118 mi) below the surface.

A larger quake followed: M4.7 81 km NE of Adak, 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
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-03-27 15:40:08 UTC
Depth
189.7 km (117.9 mi), intermediate-depth
Epicenter
52.163° N, 175.930° 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
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.097 · 14 stations
2.7ML, 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 14.4 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
172°
Stations used
23

Nearby

Within 100 km, magnitude 1.5 and up: 137 in the 60 days after this one and 46 in the 30 days before it.

After

  1. 1.859 km SE of Adak, Alaska · 1284 days ago · 26 km deep · 74 km away
  2. 3.338 km E of Adak, Alaska · 1283 days ago · 80 km deep · 39 km away
  3. 2.844 km ESE of Adak, Alaska · 1283 days ago · 78 km deep · 46 km away
  4. 1.940 km E of Adak, Alaska · 1282 days ago · 75 km deep · 30 km away
  5. 3.043 km WSW of Atka, Alaska · 1282 days ago · 139 km deep · 76 km away
  6. 3.151 km SSE of Adak, Alaska · 1281 days ago · 35 km deep · 88 km away
  7. 1.928 km S of Adak, Alaska · 1281 days ago · 63 km deep · 80 km away
  8. 2.044 km NE of Adak, Alaska · 1281 days ago · 123 km deep · 19 km away
  9. 1.541 km SSE of Adak, Alaska · 1280 days ago · 30 km deep · 76 km away
  10. 2.9Andreanof Islands, Aleutian Islands, Alaska · 1280 days ago · 35 km deep · 90 km away
  11. 1.991 km ESE of Adak, Alaska · 1280 days ago · 47 km deep · 67 km away
  12. 1.738 km SSE of Adak, Alaska · 1280 days ago · 45 km deep · 78 km away
  13. 1.854 km SSE of Adak, Alaska · 1279 days ago · 23 km deep · 81 km away
  14. 3.175 km NW of Atka, Alaska · 1279 days ago · 204 km deep · 92 km away
  15. 1.664 km ESE of Adak, Alaska · 1279 days ago · 22 km deep · 49 km away
  16. 2.699 km SW of Atka, Alaska · 1278 days ago · 35 km deep · 81 km away
  17. 2.832 km SSE of Adak, Alaska · 1277 days ago · 63 km deep · 73 km away
  18. 2.145 km SE of Adak, Alaska · 1276 days ago · 55 km deep · 62 km away
  19. 1.976 km NE of Adak, Alaska · 1275 days ago · 140 km deep · 19 km away
  20. 1.645 km S of Adak, Alaska · 1275 days ago · 25 km deep · 87 km away
  21. 2.988 km SE of Adak, Alaska · 1274 days ago · 35 km deep · 88 km away
  22. 2.059 km SE of Adak, Alaska · 1273 days ago · 14 km deep · 83 km away
  23. 4.591 km ESE of Adak, Alaska · 1273 days ago · 55 km deep · 64 km away · felt by 2
  24. 1.957 km SSE of Adak, Alaska · 1273 days ago · 22 km deep · 82 km away
  25. 2.195 km SW of Atka, Alaska · 1272 days ago · 25 km deep · 87 km away
  26. 3.066 km N of Adak, Alaska · 1271 days ago · 253 km deep · 56 km away
  27. 1.975 km SE of Adak, Alaska · 1271 days ago · 23 km deep · 79 km away
  28. 2.034 km WSW of Adak, Alaska · 1271 days ago · 79 km deep · 92 km away
  29. 1.999 km SW of Atka, Alaska · 1271 days ago · 26 km deep · 82 km away
  30. 1.975 km ESE of Adak, Alaska · 1271 days ago · 58 km deep · 64 km away
  31. 2.862 km ESE of Adak, Alaska · 1270 days ago · 35 km deep · 63 km away
  32. 1.528 km WSW of Adak, Alaska · 1270 days ago · 11 km deep · 86 km away
  33. 2.944 km ESE of Adak, Alaska · 1269 days ago · 59 km deep · 52 km away
  34. 1.948 km E of Adak, Alaska · 1269 days ago · 57 km deep · 38 km away
  35. 3.1Andreanof Islands, Aleutian Islands, Alaska · 1268 days ago · 109 km deep · 34 km away
  36. 1.913 km WNW of Adak, Alaska · 1268 days ago · 87 km deep · 68 km away
  37. 2.743 km SE of Adak, Alaska · 1268 days ago · 57 km deep · 60 km away
  38. 1.733 km WSW of Adak, Alaska · 1266 days ago · 11 km deep · 90 km away
  39. 2.679 km SW of Atka, Alaska · 1266 days ago · 60 km deep · 72 km away
  40. 1.753 km SSE of Adak, Alaska · 1266 days ago · 26 km deep · 85 km away
  41. 1.662 km SE of Adak, Alaska · 1266 days ago · 25 km deep · 73 km away
  42. 2.5Andreanof Islands, Aleutian Islands, Alaska · 1266 days ago · 154 km deep · 16 km away
  43. 1.663 km ESE of Adak, Alaska · 1266 days ago · 28 km deep · 60 km away
  44. 1.752 km S of Adak, Alaska · 1265 days ago · 18 km deep · 94 km away
  45. 1.840 km ESE of Adak, Alaska · 1265 days ago · 29 km deep · 50 km away
  46. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1265 days ago · 35 km deep · 83 km away
  47. 3.043 km NNE of Adak, Alaska · 1265 days ago · 206 km deep · 29 km away
  48. 3.8Andreanof Islands, Aleutian Islands, Alaska · 1264 days ago · 35 km deep · 82 km away
  49. 3.774 km E of Adak, Alaska · 1261 days ago · 71 km deep · 46 km away
  50. 2.236 km W of Adak, Alaska · 1261 days ago · 88 km deep · 92 km away
  51. 3.652 km SE of Adak, Alaska · 1260 days ago · 40 km deep · 78 km away
  52. 4.781 km NE of Adak, Alaska · 1259 days ago · 171 km deep · 29 km away · felt by 2
  53. 2.8101 km ESE of Adak, Alaska · 1259 days ago · 35 km deep · 82 km away
  54. 2.333 km NNW of Adak, Alaska · 1259 days ago · 170 km deep · 56 km away
  55. 3.577 km WSW of Atka, Alaska · 1259 days ago · 74 km deep · 58 km away
  56. 2.511 km SE of Adak, Alaska · 1259 days ago · 74 km deep · 55 km away
  57. 2.047 km SW of Atka, Alaska · 1257 days ago · 64 km deep · 93 km away
  58. 2.764 km SW of Atka, Alaska · 1257 days ago · 70 km deep · 80 km away
  59. 3.3Andreanof Islands, Aleutian Islands, Alaska · 1255 days ago · 35 km deep · 92 km away
  60. 2.180 km SE of Adak, Alaska · 1255 days ago · 31 km deep · 88 km away

The first 60 of 137.

Before

  1. 1.650 km SE of Adak, Alaska · 1285 days ago · 23 km deep · 76 km away
  2. 1.757 km ESE of Adak, Alaska · 1285 days ago · 43 km deep · 53 km away
  3. 3.765 km SSE of Adak, Alaska · 1285 days ago · 35 km deep · 88 km away
  4. 2.683 km SW of Atka, Alaska · 1286 days ago · 10 km deep · 89 km away
  5. 2.824 km NE of Adak, Alaska · 1286 days ago · 120 km deep · 35 km away
  6. 1.655 km SE of Adak, Alaska · 1287 days ago · 20 km deep · 74 km away
  7. 2.672 km SE of Adak, Alaska · 1289 days ago · 35 km deep · 79 km away
  8. 2.945 km SSE of Adak, Alaska · 1290 days ago · 35 km deep · 82 km away
  9. 3.253 km SE of Adak, Alaska · 1290 days ago · 35 km deep · 72 km away
  10. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1292 days ago · 35 km deep · 78 km away
  11. 1.758 km SSE of Adak, Alaska · 1293 days ago · 21 km deep · 87 km away
  12. 3.782 km ESE of Adak, Alaska · 1293 days ago · 35 km deep · 77 km away
  13. 1.848 km S of Adak, Alaska · 1294 days ago · 26 km deep · 90 km away
  14. 1.860 km SSE of Adak, Alaska · 1294 days ago · 24 km deep · 86 km away
  15. 1.67 km ENE of Adak, Alaska · 1294 days ago · 7 km deep · 50 km away
  16. 1.758 km ESE of Adak, Alaska · 1294 days ago · 46 km deep · 60 km away
  17. 3.032 km N of Adak, Alaska · 1295 days ago · 238 km deep · 44 km away
  18. 1.843 km SSE of Adak, Alaska · 1295 days ago · 25 km deep · 83 km away
  19. 3.189 km SE of Adak, Alaska · 1295 days ago · 35 km deep · 87 km away
  20. 1.950 km SSE of Adak, Alaska · 1295 days ago · 34 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000k1ub (also filed as ak0233yhdy1f). Read Fri, Oct 2, 2026, 3:25 AM UTC.