Alaska earthquakes

M4.8 earthquake 138 km WSW of Adak, Alaska

A magnitude 4.8 earthquake struck 138 km WSW of Adak, Alaska on Wed, Apr 1, 2020, 12:32 AM HADT (09:32 UTC), 35 km (22 mi) below the surface.

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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
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2020-04-01 09:32:45 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.229° N, 178.345° 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
4.8mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.026 · 469 stations
4.6ML, 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 4.1 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.03
Depth from
Operator assigned
Station coverage gap
136°
Stations used
133

Nearby

Within 100 km, magnitude 1.8 and up: 93 in the 60 days after this one and 61 in the 30 days before it.

After

  1. 2.075 km W of Adak, Alaska · 2373 days ago · 6 km deep · 81 km away
  2. 3.5132 km WSW of Adak, Alaska · 2373 days ago · 32 km deep · 7 km away
  3. 1.8134 km SW of Adak, Alaska · 2373 days ago · 26 km deep · 47 km away
  4. 1.8176 km WSW of Adak, Alaska · 2373 days ago · 14 km deep · 54 km away
  5. 2.0134 km WSW of Adak, Alaska · 2373 days ago · 7 km deep · 47 km away
  6. 3.544 km W of Adak, Alaska · 2372 days ago · 101 km deep · 99 km away
  7. 1.962 km WSW of Adak, Alaska · 2372 days ago · 13 km deep · 78 km away
  8. 2.7127 km WSW of Adak, Alaska · 2372 days ago · 28 km deep · 12 km away
  9. 2.260 km WSW of Adak, Alaska · 2371 days ago · 14 km deep · 78 km away
  10. 1.981 km W of Adak, Alaska · 2370 days ago · 3 km deep · 79 km away
  11. 3.5Andreanof Islands, Aleutian Islands, Alaska · 2369 days ago · 77 km deep · 93 km away
  12. 1.982 km W of Adak, Alaska · 2369 days ago · 5 km deep · 78 km away
  13. 2.782 km W of Adak, Alaska · 2369 days ago · 8 km deep · 71 km away
  14. 1.882 km W of Adak, Alaska · 2369 days ago · 5 km deep · 77 km away
  15. 1.879 km W of Adak, Alaska · 2369 days ago · 0 km deep · 80 km away
  16. 1.8159 km W of Adak, Alaska · 2369 days ago · 8 km deep · 70 km away
  17. 3.0234 km WSW of Adak, Alaska · 2367 days ago · 15 km deep · 100 km away
  18. 3.6133 km WSW of Adak, Alaska · 2367 days ago · 33 km deep · 16 km away
  19. 1.885 km SW of Adak, Alaska · 2363 days ago · 45 km deep · 60 km away
  20. 1.9112 km WSW of Adak, Alaska · 2363 days ago · 49 km deep · 26 km away
  21. 2.0124 km WSW of Adak, Alaska · 2361 days ago · 33 km deep · 16 km away
  22. 2.573 km SW of Adak, Alaska · 2359 days ago · 37 km deep · 67 km away
  23. 3.897 km SW of Adak, Alaska · 2359 days ago · 35 km deep · 47 km away
  24. 1.9198 km WSW of Adak, Alaska · 2358 days ago · 74 km deep · 85 km away
  25. 2.6220 km WSW of Adak, Alaska · 2357 days ago · 10 km deep · 82 km away
  26. 2.7122 km WSW of Adak, Alaska · 2357 days ago · 35 km deep · 16 km away
  27. 2.5211 km WSW of Adak, Alaska · 2356 days ago · 25 km deep · 78 km away
  28. 2.5158 km WSW of Adak, Alaska · 2353 days ago · 10 km deep · 32 km away
  29. 2.080 km W of Adak, Alaska · 2353 days ago · 10 km deep · 79 km away
  30. 2.8227 km WSW of Adak, Alaska · 2352 days ago · 35 km deep · 96 km away
  31. 1.981 km W of Adak, Alaska · 2352 days ago · 5 km deep · 79 km away
  32. 1.9153 km WSW of Adak, Alaska · 2349 days ago · 20 km deep · 35 km away
  33. 1.9194 km W of Adak, Alaska · 2349 days ago · 87 km deep · 95 km away
  34. 3.4221 km WSW of Adak, Alaska · 2349 days ago · 10 km deep · 83 km away
  35. 1.885 km W of Adak, Alaska · 2349 days ago · 7 km deep · 78 km away
  36. 1.9142 km WSW of Adak, Alaska · 2345 days ago · 23 km deep · 4 km away
  37. 3.177 km W of Adak, Alaska · 2345 days ago · 10 km deep · 80 km away
  38. 2.9183 km WSW of Adak, Alaska · 2345 days ago · 80 km deep · 72 km away
  39. 2.3124 km WSW of Adak, Alaska · 2344 days ago · 33 km deep · 21 km away
  40. 3.1132 km WSW of Adak, Alaska · 2344 days ago · 10 km deep · 27 km away
  41. 2.879 km W of Adak, Alaska · 2343 days ago · 10 km deep · 77 km away
  42. 1.986 km W of Adak, Alaska · 2343 days ago · 8 km deep · 75 km away
  43. 2.141 km SW of Adak, Alaska · 2342 days ago · 27 km deep · 98 km away
  44. 2.9134 km WSW of Adak, Alaska · 2342 days ago · 70 km deep · 36 km away
  45. 2.1109 km WSW of Adak, Alaska · 2341 days ago · 39 km deep · 29 km away
  46. 1.866 km W of Adak, Alaska · 2340 days ago · 89 km deep · 83 km away
  47. 2.0207 km SW of Adak, Alaska · 2340 days ago · 27 km deep · 99 km away
  48. 1.8134 km WSW of Adak, Alaska · 2340 days ago · 29 km deep · 6 km away
  49. 2.6195 km WSW of Adak, Alaska · 2338 days ago · 17 km deep · 77 km away
  50. 1.872 km SSW of Adak, Alaska · 2338 days ago · 29 km deep · 86 km away
  51. 2.6157 km SSW of Adak, Alaska · 2338 days ago · 10 km deep · 91 km away
  52. 2.7135 km SW of Adak, Alaska · 2338 days ago · 10 km deep · 49 km away
  53. 1.972 km SSW of Adak, Alaska · 2336 days ago · 32 km deep · 86 km away
  54. 1.992 km SW of Adak, Alaska · 2333 days ago · 26 km deep · 61 km away
  55. 2.750 km WSW of Adak, Alaska · 2332 days ago · 77 km deep · 90 km away
  56. 1.982 km W of Adak, Alaska · 2332 days ago · 6 km deep · 78 km away
  57. 2.7177 km WSW of Adak, Alaska · 2332 days ago · 35 km deep · 46 km away
  58. 1.859 km WSW of Adak, Alaska · 2331 days ago · 13 km deep · 79 km away
  59. 2.593 km SSW of Adak, Alaska · 2330 days ago · 35 km deep · 87 km away
  60. 1.9215 km WSW of Adak, Alaska · 2330 days ago · 26 km deep · 81 km away

The first 60 of 93.

Before

  1. 2.0131 km WSW of Adak, Alaska · 2376 days ago · 25 km deep · 19 km away
  2. 3.252 km SW of Adak, Alaska · 2376 days ago · 44 km deep · 93 km away
  3. 2.6111 km WSW of Adak, Alaska · 2376 days ago · 40 km deep · 28 km away
  4. 2.0148 km WSW of Adak, Alaska · 2377 days ago · 13 km deep · 28 km away
  5. 3.4201 km WSW of Adak, Alaska · 2377 days ago · 26 km deep · 65 km away
  6. 2.799 km W of Adak, Alaska · 2377 days ago · 197 km deep · 68 km away
  7. 3.5116 km WSW of Adak, AK · 2377 days ago · 58 km deep · 23 km away
  8. 3.592 km SW of Adak, Alaska · 2379 days ago · 17 km deep · 54 km away
  9. 2.9102 km WSW of Adak, Alaska · 2379 days ago · 69 km deep · 40 km away
  10. 1.9120 km WSW of Adak, Alaska · 2379 days ago · 10 km deep · 25 km away
  11. 1.8171 km WSW of Adak, Alaska · 2379 days ago · 20 km deep · 34 km away
  12. 1.898 km WSW of Adak, AK · 2381 days ago · 31 km deep · 40 km away
  13. 2.0136 km WSW of Adak, Alaska · 2382 days ago · 5 km deep · 40 km away
  14. 1.866 km W of Adak, Alaska · 2382 days ago · 90 km deep · 88 km away
  15. 2.5136 km W of Adak, Alaska · 2382 days ago · 138 km deep · 70 km away
  16. 1.8131 km WSW of Adak, Alaska · 2383 days ago · 27 km deep · 7 km away
  17. 2.366 km W of Adak, Alaska · 2383 days ago · 93 km deep · 86 km away
  18. 2.0216 km WSW of Adak, Alaska · 2384 days ago · 14 km deep · 84 km away
  19. 2.791 km SW of Adak, Alaska · 2384 days ago · 62 km deep · 49 km away
  20. 2.5135 km W of Adak, Alaska · 2386 days ago · 211 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70008k8k (also filed as ak02048azs64). Read Thu, Oct 1, 2026, 7:59 AM UTC.