Alaska earthquakes

M3.2 earthquake 139 km E of Atka, Alaska

A magnitude 3.2 earthquake struck 139 km E of Atka, Alaska on Fri, Dec 20, 2024, 9:31 AM HAST (19:31 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.4 69 km ESE of Atka, 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
3.2 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-12-20 19:31:52 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
52.095° N, 172.175° 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
3.2ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.073 · 25 stations
2.9ML, 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 5.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
200°, poorly surrounded by stations
Stations used
32

Nearby

Within 100 km, magnitude 1.5 and up: 43 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 2.074 km ESE of Atka, Alaska · 650 days ago · 43 km deep · 82 km away
  2. 2.7145 km SE of Atka, Alaska · 650 days ago · 17 km deep · 86 km away
  3. 3.247 km ESE of Atka, Alaska · 648 days ago · 11 km deep · 100 km away
  4. 3.3190 km E of Atka, Alaska · 643 days ago · 35 km deep · 52 km away
  5. 4.0195 km E of Atka, Alaska · 643 days ago · 59 km deep · 56 km away
  6. 3.0192 km E of Atka, Alaska · 643 days ago · 35 km deep · 54 km away
  7. 2.370 km SE of Atka, Alaska · 640 days ago · 32 km deep · 91 km away
  8. 3.379 km SE of Atka, Alaska · 638 days ago · 35 km deep · 84 km away
  9. 3.875 km SE of Atka, Alaska · 638 days ago · 56 km deep · 98 km away
  10. 3.0158 km WSW of Nikolski, Alaska · 635 days ago · 63 km deep · 87 km away
  11. 3.289 km SE of Atka, Alaska · 635 days ago · 35 km deep · 93 km away
  12. 3.0169 km WSW of Nikolski, Alaska · 634 days ago · 35 km deep · 79 km away
  13. 2.456 km ENE of Atka, Alaska · 629 days ago · 2 km deep · 86 km away
  14. 3.050 km ESE of Atka, Alaska · 629 days ago · 10 km deep · 95 km away
  15. 2.468 km SE of Atka, Alaska · 628 days ago · 26 km deep · 93 km away
  16. 4.2193 km E of Atka, Alaska · 627 days ago · 43 km deep · 55 km away
  17. 3.1195 km WSW of Nikolski, Alaska · 627 days ago · 35 km deep · 57 km away
  18. 2.041 km ESE of Atka, Alaska · 627 days ago · 8 km deep · 98 km away
  19. 3.7182 km WSW of Nikolski, Alaska · 627 days ago · 35 km deep · 67 km away
  20. 2.8177 km SW of Nikolski, Alaska · 626 days ago · 35 km deep · 77 km away
  21. 3.0163 km ESE of Atka, Alaska · 624 days ago · 35 km deep · 29 km away
  22. 2.367 km ENE of Atka, Alaska · 624 days ago · 2 km deep · 84 km away
  23. 2.789 km SE of Atka, Alaska · 623 days ago · 35 km deep · 90 km away
  24. 2.887 km SE of Atka, Alaska · 623 days ago · 35 km deep · 79 km away
  25. 2.977 km SE of Atka, Alaska · 622 days ago · 35 km deep · 97 km away
  26. 2.999 km SE of Atka, Alaska · 622 days ago · 35 km deep · 82 km away
  27. 2.356 km E of Atka, Alaska · 619 days ago · 65 km deep · 83 km away
  28. 3.6184 km WSW of Nikolski, Alaska · 615 days ago · 51 km deep · 69 km away
  29. 2.874 km ESE of Atka, Alaska · 613 days ago · 50 km deep · 78 km away
  30. 3.157 km E of Atka, Alaska · 612 days ago · 102 km deep · 82 km away
  31. 4.291 km SE of Atka, Alaska · 612 days ago · 25 km deep · 90 km away
  32. 3.2161 km SW of Nikolski, Alaska · 609 days ago · 35 km deep · 96 km away
  33. 3.1173 km E of Atka, Alaska · 607 days ago · 25 km deep · 41 km away
  34. 4.3178 km ESE of Atka, Alaska · 607 days ago · 35 km deep · 60 km away
  35. 3.4174 km E of Atka, Alaska · 606 days ago · 111 km deep · 54 km away
  36. 3.3181 km SW of Nikolski, Alaska · 602 days ago · 35 km deep · 84 km away
  37. 4.469 km ESE of Atka, Alaska · 602 days ago · 90 km deep · 71 km away
  38. 2.278 km ESE of Atka, Alaska · 595 days ago · 57 km deep · 68 km away
  39. 4.1181 km E of Atka, Alaska · 595 days ago · 58 km deep · 43 km away
  40. 3.395 km E of Atka, Alaska · 595 days ago · 7 km deep · 53 km away
  41. 3.4187 km E of Atka, Alaska · 595 days ago · 31 km deep · 49 km away
  42. 4.0129 km E of Atka, Alaska · 594 days ago · 72 km deep · 19 km away
  43. 3.6184 km E of Atka, Alaska · 593 days ago · 51 km deep · 46 km away

Before

  1. 3.084 km E of Atka, Alaska · 652 days ago · 159 km deep · 57 km away
  2. 3.3163 km SW of Nikolski, Alaska · 655 days ago · 35 km deep · 95 km away
  3. 3.0188 km E of Atka, Alaska · 660 days ago · 35 km deep · 49 km away
  4. 2.9159 km SW of Nikolski, Alaska · 660 days ago · 62 km deep · 93 km away
  5. 3.6155 km ESE of Atka, Alaska · 665 days ago · 24 km deep · 29 km away
  6. 4.3142 km E of Atka, Alaska · 665 days ago · 50 km deep · 12 km away
  7. 2.6155 km WSW of Nikolski, Alaska · 667 days ago · 35 km deep · 91 km away
  8. 5.6165 km SW of Nikolski, Alaska · 667 days ago · 38 km deep · 88 km away · felt by 1 · tsunami flag
  9. 2.5163 km WSW of Nikolski, Alaska · 669 days ago · 35 km deep · 85 km away
  10. 2.880 km ENE of Atka, Alaska · 669 days ago · 8 km deep · 66 km away
  11. 2.366 km ENE of Atka, Alaska · 670 days ago · 9 km deep · 79 km away
  12. 3.579 km ESE of Atka, Alaska · 670 days ago · 35 km deep · 71 km away
  13. 3.148 km ESE of Atka, Alaska · 672 days ago · 10 km deep · 99 km away
  14. 4.1108 km ENE of Atka, Alaska · 674 days ago · 128 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000pk8s (also filed as ak024gbfa738). Read Sat, Oct 3, 2026, 6:13 AM UTC.