Alaska earthquakes

M3.1 earthquake 173 km E of Atka, Alaska

A magnitude 3.1 earthquake struck 173 km E of Atka, Alaska on Sun, Feb 2, 2025, 11:48 PM HAST (09:48 UTC), 25 km (15 mi) below the surface.

A larger quake followed: M4.3 178 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
3.1 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-02-03 09:48:25 UTC
Depth
24.9 km (15.5 mi), shallow
Epicenter
52.285° N, 171.667° 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
3.1ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.085 · 18 stations
3.1ML, 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 6.5 km horizontally, 4.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
196°, poorly surrounded by stations
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: 41 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 4.3178 km ESE of Atka, Alaska · 607 days ago · 35 km deep · 75 km away
  2. 3.4174 km E of Atka, Alaska · 607 days ago · 111 km deep · 22 km away
  3. 3.2136 km WSW of Nikolski, Alaska · 607 days ago · 35 km deep · 75 km away
  4. 3.1126 km SW of Nikolski, Alaska · 607 days ago · 35 km deep · 93 km away
  5. 3.3181 km SW of Nikolski, Alaska · 603 days ago · 35 km deep · 61 km away
  6. 3.9128 km W of Nikolski, Alaska · 599 days ago · 68 km deep · 82 km away
  7. 3.1129 km SW of Nikolski, Alaska · 595 days ago · 35 km deep · 86 km away
  8. 4.1181 km E of Atka, Alaska · 595 days ago · 58 km deep · 19 km away
  9. 3.395 km E of Atka, Alaska · 595 days ago · 7 km deep · 79 km away
  10. 3.4187 km E of Atka, Alaska · 595 days ago · 31 km deep · 36 km away
  11. 4.0129 km E of Atka, Alaska · 595 days ago · 72 km deep · 44 km away
  12. 3.6184 km E of Atka, Alaska · 594 days ago · 51 km deep · 22 km away
  13. 3.0157 km SW of Nikolski, Alaska · 593 days ago · 10 km deep · 80 km away
  14. 3.3185 km E of Atka, Alaska · 588 days ago · 35 km deep · 31 km away
  15. 2.8165 km WSW of Nikolski, Alaska · 586 days ago · 34 km deep · 38 km away
  16. 3.0135 km SW of Nikolski, Alaska · 586 days ago · 35 km deep · 85 km away
  17. 2.4140 km ESE of Atka, Alaska · 586 days ago · 42 km deep · 53 km away
  18. 3.8183 km E of Atka, Alaska · 585 days ago · 16 km deep · 20 km away
  19. 2.3129 km WSW of Nikolski, Alaska · 585 days ago · 66 km deep · 74 km away
  20. 3.9123 km WSW of Nikolski, Alaska · 582 days ago · 49 km deep · 85 km away
  21. 2.4168 km SW of Nikolski, Alaska · 582 days ago · 13 km deep · 63 km away
  22. 2.8138 km W of Nikolski, Alaska · 581 days ago · 202 km deep · 96 km away
  23. 3.0140 km WSW of Nikolski, Alaska · 581 days ago · 109 km deep · 69 km away
  24. 3.3152 km SW of Nikolski, Alaska · 579 days ago · 44 km deep · 80 km away
  25. 2.5113 km ESE of Atka, Alaska · 569 days ago · 64 km deep · 73 km away
  26. 2.7149 km SW of Nikolski, Alaska · 567 days ago · 35 km deep · 94 km away
  27. 3.6166 km WSW of Nikolski, Alaska · 562 days ago · 12 km deep · 40 km away
  28. 3.8125 km SW of Nikolski, Alaska · 559 days ago · 35 km deep · 89 km away
  29. 3.182 km ESE of Atka, Alaska · 559 days ago · 10 km deep · 96 km away
  30. 3.5126 km SW of Nikolski, Alaska · 557 days ago · 48 km deep · 88 km away
  31. 2.199 km ESE of Atka, Alaska · 555 days ago · 40 km deep · 88 km away
  32. 2.7166 km SW of Nikolski, Alaska · 555 days ago · 35 km deep · 63 km away
  33. 2.8166 km SW of Nikolski, Alaska · 555 days ago · 35 km deep · 72 km away
  34. 3.2161 km SW of Nikolski, Alaska · 554 days ago · 35 km deep · 71 km away
  35. 3.0163 km SW of Nikolski, Alaska · 554 days ago · 35 km deep · 68 km away
  36. 3.0114 km ENE of Atka, Alaska · 551 days ago · 200 km deep · 71 km away
  37. 3.2171 km WSW of Nikolski, Alaska · 551 days ago · 35 km deep · 50 km away
  38. 2.7142 km E of Atka, Alaska · 550 days ago · 66 km deep · 43 km away
  39. 3.0170 km ESE of Atka, Alaska · 550 days ago · 35 km deep · 48 km away
  40. 3.6184 km ESE of Atka, Alaska · 550 days ago · 35 km deep · 64 km away
  41. 2.1116 km WSW of Nikolski, Alaska · 550 days ago · 82 km deep · 87 km away

Before

  1. 4.2141 km SW of Nikolski, Alaska · 610 days ago · 50 km deep · 81 km away
  2. 3.2161 km SW of Nikolski, Alaska · 610 days ago · 35 km deep · 65 km away
  3. 2.6136 km SW of Nikolski, Alaska · 613 days ago · 35 km deep · 94 km away
  4. 4.3137 km SW of Nikolski, Alaska · 613 days ago · 35 km deep · 81 km away
  5. 3.6184 km WSW of Nikolski, Alaska · 616 days ago · 51 km deep · 43 km away
  6. 3.4153 km SW of Nikolski, Alaska · 622 days ago · 35 km deep · 74 km away
  7. 3.0163 km ESE of Atka, Alaska · 625 days ago · 35 km deep · 41 km away
  8. 2.8177 km SW of Nikolski, Alaska · 627 days ago · 35 km deep · 49 km away
  9. 3.7182 km WSW of Nikolski, Alaska · 628 days ago · 35 km deep · 38 km away
  10. 3.1195 km WSW of Nikolski, Alaska · 628 days ago · 35 km deep · 35 km away
  11. 4.2193 km E of Atka, Alaska · 628 days ago · 43 km deep · 29 km away
  12. 3.7140 km WSW of Nikolski, Alaska · 629 days ago · 61 km deep · 63 km away
  13. 3.0169 km WSW of Nikolski, Alaska · 635 days ago · 35 km deep · 46 km away
  14. 3.0158 km WSW of Nikolski, Alaska · 635 days ago · 63 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000pwv9 (also filed as ak0251kdx1n4). Read Sat, Oct 3, 2026, 9:42 PM UTC.