Alaska earthquakes

M2.7 earthquake 260 km WSW of Adak, Alaska

A magnitude 2.7 earthquake struck 260 km WSW of Adak, Alaska on Tue, May 21, 2019, 12:11 AM GMT+12 (12:11 UTC), 30 km (19 mi) below the surface.

A larger quake followed: M4.0 287 km W 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
2.7 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-05-20 12:11:05 UTC
Depth
30.3 km (18.8 mi), shallow
Epicenter
51.374° N, 179.689° E
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
2.7ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed
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 3.0 km horizontally, 12.1 km in depth
Depth from
From location
Station coverage gap
218°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 53 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.1165 km W of Adak, Alaska · 2690 days ago · 90 km deep · 97 km away
  2. 2.3248 km W of Adak, Alaska · 2689 days ago · 33 km deep · 98 km away
  3. 2.5223 km WSW of Adak, Alaska · 2688 days ago · 35 km deep · 52 km away
  4. 2.6166 km WSW of Adak, AK · 2687 days ago · 35 km deep · 97 km away
  5. 2.3192 km W of Adak, Alaska · 2683 days ago · 57 km deep · 68 km away
  6. 2.3242 km W of Adak, Alaska · 2682 days ago · 37 km deep · 24 km away
  7. 2.9Rat Islands, Aleutian Islands, Alaska · 2681 days ago · 10 km deep · 97 km away
  8. 2.6Rat Islands, Aleutian Islands, Alaska · 2675 days ago · 35 km deep · 70 km away
  9. 3.0267 km W of Adak, Alaska · 2673 days ago · 30 km deep · 89 km away
  10. 1.8201 km WSW of Adak, Alaska · 2672 days ago · 13 km deep · 62 km away
  11. 1.7189 km WSW of Adak, Alaska · 2671 days ago · 33 km deep · 72 km away
  12. 2.1236 km WSW of Adak, Alaska · 2670 days ago · 21 km deep · 29 km away
  13. 2.6Rat Islands, Aleutian Islands, Alaska · 2670 days ago · 89 km deep · 80 km away
  14. 2.2Rat Islands, Aleutian Islands, Alaska · 2668 days ago · 65 km deep · 55 km away
  15. 2.1Rat Islands, Aleutian Islands, Alaska · 2667 days ago · 23 km deep · 14 km away
  16. 2.4223 km W of Adak, Alaska · 2666 days ago · 91 km deep · 49 km away
  17. 2.5205 km WSW of Adak, Alaska · 2665 days ago · 24 km deep · 80 km away
  18. 2.5198 km W of Adak, Alaska · 2664 days ago · 173 km deep · 72 km away
  19. 2.1176 km WSW of Adak, Alaska · 2664 days ago · 27 km deep · 92 km away
  20. 2.4228 km WSW of Adak, Alaska · 2663 days ago · 48 km deep · 35 km away
  21. 2.0Rat Islands, Aleutian Islands, Alaska · 2663 days ago · 16 km deep · 55 km away
  22. 1.7186 km WSW of Adak, Alaska · 2663 days ago · 71 km deep · 74 km away
  23. 2.2201 km W of Adak, Alaska · 2662 days ago · 13 km deep · 69 km away
  24. 1.9200 km W of Adak, Alaska · 2662 days ago · 7 km deep · 70 km away
  25. 1.9Rat Islands, Aleutian Islands, Alaska · 2662 days ago · 42 km deep · 61 km away
  26. 1.6194 km WSW of Adak, Alaska · 2662 days ago · 25 km deep · 82 km away
  27. 3.1246 km WSW of Adak, Alaska · 2661 days ago · 21 km deep · 48 km away
  28. 2.1188 km WSW of Adak, Alaska · 2661 days ago · 26 km deep · 76 km away
  29. 2.1Rat Islands, Aleutian Islands, Alaska · 2661 days ago · 110 km deep · 90 km away
  30. 1.9Rat Islands, Aleutian Islands, Alaska · 2661 days ago · 81 km deep · 79 km away
  31. 1.6266 km W of Adak, Alaska · 2656 days ago · 95 km deep · 39 km away
  32. 2.3Rat Islands, Aleutian Islands, Alaska · 2655 days ago · 76 km deep · 100 km away
  33. 2.4Rat Islands, Aleutian Islands, Alaska · 2655 days ago · 16 km deep · 90 km away
  34. 2.2Rat Islands, Aleutian Islands, Alaska · 2654 days ago · 67 km deep · 79 km away
  35. 1.9263 km WSW of Adak, Alaska · 2654 days ago · 21 km deep · 19 km away
  36. 1.9171 km WSW of Adak, Alaska · 2652 days ago · 30 km deep · 94 km away
  37. 1.8193 km WSW of Adak, Alaska · 2650 days ago · 20 km deep · 73 km away
  38. 2.3256 km WSW of Adak, Alaska · 2649 days ago · 21 km deep · 4 km away
  39. 2.3Rat Islands, Aleutian Islands, Alaska · 2647 days ago · 89 km deep · 80 km away
  40. 2.3218 km WSW of Adak, Alaska · 2647 days ago · 14 km deep · 63 km away
  41. 1.9167 km WSW of Adak, Alaska · 2645 days ago · 16 km deep · 97 km away
  42. 1.9183 km WSW of Adak, Alaska · 2645 days ago · 67 km deep · 78 km away
  43. 2.7Rat Islands, Aleutian Islands, Alaska · 2642 days ago · 23 km deep · 55 km away
  44. 2.7180 km WSW of Adak, Alaska · 2641 days ago · 59 km deep · 84 km away
  45. 2.1239 km WSW of Adak, Alaska · 2641 days ago · 11 km deep · 46 km away
  46. 3.7266 km W of Adak, Alaska · 2639 days ago · 97 km deep · 36 km away
  47. 1.8226 km WSW of Adak, Alaska · 2639 days ago · 13 km deep · 36 km away
  48. 1.6Rat Islands, Aleutian Islands, Alaska · 2637 days ago · 15 km deep · 56 km away
  49. 1.5291 km W of Adak, Alaska · 2637 days ago · 60 km deep · 43 km away
  50. 1.8Rat Islands, Aleutian Islands, Alaska · 2635 days ago · 69 km deep · 53 km away
  51. 1.9240 km W of Adak, Alaska · 2633 days ago · 73 km deep · 24 km away
  52. 2.0208 km W of Adak, Alaska · 2633 days ago · 86 km deep · 57 km away
  53. 4.0287 km W of Adak, Alaska · 2633 days ago · 24 km deep · 44 km away

Before

  1. 2.3170 km W of Adak, Alaska · 2693 days ago · 138 km deep · 97 km away
  2. 3.6267 km W of Adak, Alaska · 2694 days ago · 60 km deep · 72 km away
  3. 2.4206 km W of Adak, Alaska · 2694 days ago · 149 km deep · 55 km away
  4. 3.8Rat Islands, Aleutian Islands, Alaska · 2696 days ago · 10 km deep · 93 km away
  5. 3.0Rat Islands, Aleutian Islands, Alaska · 2698 days ago · 35 km deep · 86 km away
  6. 2.3279 km W of Adak, Alaska · 2698 days ago · 59 km deep · 92 km away
  7. 3.9266 km W of Adak, Alaska · 2713 days ago · 71 km deep · 54 km away
  8. 2.8186 km WSW of Adak, Alaska · 2718 days ago · 50 km deep · 74 km away
  9. 3.1225 km W of Adak, Alaska · 2720 days ago · 55 km deep · 57 km away
  10. 2.6232 km WSW of Adak, Alaska · 2721 days ago · 16 km deep · 59 km away
  11. 2.2175 km WSW of Adak, Alaska · 2722 days ago · 52 km deep · 85 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70003tyu (also filed as ak0196fqg6m5). Read Fri, Oct 2, 2026, 7:12 PM UTC.