Alaska earthquakes

M1.9 earthquake 81 km SSW of Unalaska, Alaska

A magnitude 1.9 earthquake struck 81 km SSW of Unalaska, Alaska on Tue, Feb 28, 2023, 8:32 AM AKST (17:32 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M3.8 142 km S of Unalaska, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

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

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The earthquake

Magnitude
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2023-02-28 17:32:40 UTC
Depth
17.5 km (10.9 mi), shallow
Epicenter
53.189° N, 166.961° 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
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 186 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 2.884 km SSW of Unalaska, Alaska · 1312 days ago · 35 km deep · 6 km away
  2. 1.69 km NNE of Dutch Harbor, Alaska · 1312 days ago · 7 km deep · 92 km away
  3. 2.5Fox Islands, Aleutian Islands, Alaska · 1312 days ago · 35 km deep · 63 km away
  4. 3.242 km SW of Unalaska, Alaska · 1311 days ago · 80 km deep · 43 km away
  5. 2.656 km E of Nikolski, Alaska · 1310 days ago · 69 km deep · 74 km away
  6. 1.549 km SW of Unalaska, Alaska · 1309 days ago · 9 km deep · 46 km away
  7. 2.7Fox Islands, Aleutian Islands, Alaska · 1309 days ago · 10 km deep · 61 km away
  8. 2.554 km SW of Unalaska, Alaska · 1308 days ago · 9 km deep · 31 km away
  9. 3.492 km NE of Nikolski, Alaska · 1307 days ago · 90 km deep · 72 km away
  10. 2.069 km ESE of Nikolski, Alaska · 1307 days ago · 26 km deep · 72 km away
  11. 1.966 km SE of Unalaska, Alaska · 1307 days ago · 22 km deep · 86 km away
  12. 2.867 km SE of Unalaska, Alaska · 1307 days ago · 35 km deep · 85 km away
  13. 2.793 km S of Unalaska, Alaska · 1305 days ago · 20 km deep · 42 km away
  14. 3.8142 km S of Unalaska, Alaska · 1304 days ago · 25 km deep · 75 km away
  15. 2.5147 km S of Unalaska, Alaska · 1304 days ago · 26 km deep · 82 km away
  16. 2.0129 km ESE of Nikolski, Alaska · 1304 days ago · 13 km deep · 61 km away
  17. 3.3118 km ESE of Nikolski, Alaska · 1304 days ago · 35 km deep · 69 km away
  18. 1.873 km WSW of Unalaska, Alaska · 1304 days ago · 13 km deep · 58 km away
  19. 2.626 km SSW of Unalaska, Alaska · 1304 days ago · 84 km deep · 55 km away
  20. 2.349 km ESE of Nikolski, Alaska · 1303 days ago · 26 km deep · 91 km away
  21. 2.781 km ESE of Nikolski, Alaska · 1303 days ago · 35 km deep · 67 km away
  22. 2.979 km SSE of Unalaska, Alaska · 1302 days ago · 35 km deep · 62 km away
  23. 1.872 km SSE of Unalaska, Alaska · 1302 days ago · 42 km deep · 64 km away
  24. 1.742 km S of Unalaska, Alaska · 1302 days ago · 72 km deep · 45 km away
  25. 2.348 km ESE of Unalaska, Alaska · 1301 days ago · 42 km deep · 91 km away
  26. 2.771 km ENE of Nikolski, Alaska · 1301 days ago · 54 km deep · 60 km away
  27. 3.4Fox Islands, Aleutian Islands, Alaska · 1300 days ago · 35 km deep · 84 km away
  28. 2.181 km E of Nikolski, Alaska · 1299 days ago · 22 km deep · 64 km away
  29. 2.070 km SE of Unalaska, Alaska · 1299 days ago · 21 km deep · 75 km away
  30. 2.170 km SSW of Unalaska, Alaska · 1298 days ago · 47 km deep · 10 km away
  31. 2.176 km SW of Unalaska, Alaska · 1298 days ago · 13 km deep · 42 km away
  32. 2.6Fox Islands, Aleutian Islands, Alaska · 1297 days ago · 10 km deep · 67 km away
  33. 2.890 km ENE of Nikolski, Alaska · 1297 days ago · 80 km deep · 56 km away
  34. 2.3116 km ESE of Nikolski, Alaska · 1296 days ago · 22 km deep · 89 km away
  35. 3.481 km S of Unalaska, Alaska · 1296 days ago · 35 km deep · 17 km away
  36. 2.2Fox Islands, Aleutian Islands, Alaska · 1296 days ago · 26 km deep · 18 km away
  37. 2.062 km SE of Unalaska, Alaska · 1294 days ago · 41 km deep · 83 km away
  38. 1.669 km SE of Unalaska, Alaska · 1293 days ago · 25 km deep · 89 km away
  39. 1.659 km SE of Unalaska, Alaska · 1293 days ago · 39 km deep · 86 km away
  40. 1.513 km WSW of Unalaska, Alaska · 1293 days ago · 10 km deep · 72 km away
  41. 2.253 km W of Dutch Harbor, Alaska · 1293 days ago · 79 km deep · 74 km away
  42. 2.225 km SSW of Unalaska, Alaska · 1292 days ago · 71 km deep · 56 km away
  43. 2.265 km SE of Unalaska, Alaska · 1290 days ago · 26 km deep · 81 km away
  44. 2.5Fox Islands, Aleutian Islands, Alaska · 1289 days ago · 35 km deep · 10 km away
  45. 2.0137 km S of Unalaska, Alaska · 1288 days ago · 26 km deep · 64 km away
  46. 2.729 km ESE of Unalaska, Alaska · 1288 days ago · 73 km deep · 88 km away
  47. 2.365 km SW of Unalaska, Alaska · 1288 days ago · 70 km deep · 35 km away
  48. 3.780 km S of Unalaska, Alaska · 1288 days ago · 36 km deep · 15 km away
  49. 2.269 km SW of Unalaska, Alaska · 1288 days ago · 102 km deep · 42 km away
  50. 2.120 km SSE of Unalaska, Alaska · 1286 days ago · 79 km deep · 66 km away
  51. 2.54 km SW of Unalaska, Alaska · 1286 days ago · 9 km deep · 77 km away
  52. 2.234 km SW of Unalaska, Alaska · 1286 days ago · 107 km deep · 53 km away
  53. 1.52 km WSW of Dutch Harbor, Alaska · 1286 days ago · 7 km deep · 81 km away
  54. 1.53 km WSW of Dutch Harbor, Alaska · 1286 days ago · 6 km deep · 80 km away
  55. 2.23 km W of Dutch Harbor, Alaska · 1286 days ago · 5 km deep · 81 km away
  56. 2.21 km WSW of Dutch Harbor, Alaska · 1286 days ago · 5 km deep · 81 km away
  57. 1.52 km WSW of Dutch Harbor, Alaska · 1286 days ago · 5 km deep · 81 km away
  58. 2.73 km SW of Unalaska, Alaska · 1285 days ago · 8 km deep · 78 km away
  59. 1.73 km WSW of Unalaska, Alaska · 1285 days ago · 4 km deep · 78 km away
  60. 2.03 km WSW of Dutch Harbor, Alaska · 1285 days ago · 6 km deep · 80 km away

The first 60 of 186.

Before

  1. 1.647 km WSW of Unalaska, Alaska · 1313 days ago · 15 km deep · 54 km away
  2. 2.815 km NW of Dutch Harbor, Alaska · 1315 days ago · 112 km deep · 88 km away
  3. 2.945 km SSE of Unalaska, Alaska · 1316 days ago · 66 km deep · 62 km away
  4. 1.955 km S of Unalaska, Alaska · 1317 days ago · 55 km deep · 33 km away
  5. 2.5129 km ESE of Nikolski, Alaska · 1318 days ago · 10 km deep · 71 km away
  6. 2.724 km SE of Unalaska, Alaska · 1318 days ago · 80 km deep · 74 km away
  7. 1.672 km SW of Unalaska, Alaska · 1321 days ago · 13 km deep · 41 km away
  8. 1.758 km SSE of Unalaska, Alaska · 1321 days ago · 26 km deep · 49 km away
  9. 1.767 km S of Unalaska, Alaska · 1321 days ago · 30 km deep · 37 km away
  10. 2.053 km ESE of Nikolski, Alaska · 1322 days ago · 26 km deep · 91 km away
  11. 3.851 km ESE of Nikolski, Alaska · 1322 days ago · 35 km deep · 92 km away
  12. 1.995 km SW of Unalaska, Alaska · 1322 days ago · 18 km deep · 28 km away
  13. 2.0107 km E of Nikolski, Alaska · 1323 days ago · 26 km deep · 36 km away
  14. 3.046 km ESE of Nikolski, Alaska · 1323 days ago · 48 km deep · 95 km away
  15. 2.354 km ESE of Nikolski, Alaska · 1323 days ago · 17 km deep · 99 km away
  16. 1.620 km WSW of Dutch Harbor, Alaska · 1324 days ago · 7 km deep · 73 km away
  17. 2.5Fox Islands, Aleutian Islands, Alaska · 1324 days ago · 30 km deep · 33 km away
  18. 1.7Fox Islands, Aleutian Islands, Alaska · 1325 days ago · 5 km deep · 89 km away
  19. 1.78 km ENE of Unalaska, Alaska · 1325 days ago · 6 km deep · 87 km away
  20. 2.3131 km SSW of Unalaska, Alaska · 1326 days ago · 11 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0232pv0shd. Read Fri, Oct 2, 2026, 11:47 PM UTC.