Alaska earthquakes

M3.1 earthquake 174 km ESE of Atka, Alaska

A magnitude 3.1 earthquake struck 174 km ESE of Atka, Alaska on Fri, May 2, 2025, 1:25 PM HADT (22:25 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M4.4 178 km ESE of Atka, Alaska. This one was a foreshock.

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Map

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
2025-05-02 22:25:00 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
51.882° N, 171.705° 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 · ±0.105 · 12 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 4.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
225°, poorly surrounded by stations
Stations used
13

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.7186 km E of Atka, Alaska · 511 days ago · 35 km deep · 14 km away
  2. 3.0193 km ESE of Atka, Alaska · 511 days ago · 35 km deep · 18 km away
  3. 3.1187 km WSW of Nikolski, Alaska · 511 days ago · 66 km deep · 52 km away
  4. 3.8185 km SW of Nikolski, Alaska · 504 days ago · 35 km deep · 43 km away
  5. 3.0185 km ESE of Atka, Alaska · 496 days ago · 35 km deep · 11 km away
  6. 3.1139 km E of Atka, Alaska · 495 days ago · 106 km deep · 52 km away
  7. 2.8119 km ESE of Atka, Alaska · 495 days ago · 35 km deep · 73 km away
  8. 2.7168 km SW of Nikolski, Alaska · 485 days ago · 35 km deep · 61 km away
  9. 2.2117 km ESE of Atka, Alaska · 484 days ago · 26 km deep · 61 km away
  10. 2.0107 km ESE of Atka, Alaska · 484 days ago · 12 km deep · 70 km away
  11. 2.1111 km ESE of Atka, Alaska · 484 days ago · 13 km deep · 68 km away
  12. 3.8194 km E of Atka, Alaska · 483 days ago · 35 km deep · 27 km away
  13. 4.4178 km ESE of Atka, Alaska · 483 days ago · 30 km deep · 26 km away
  14. 2.997 km E of Atka, Alaska · 473 days ago · 70 km deep · 80 km away
  15. 3.1139 km WSW of Nikolski, Alaska · 471 days ago · 61 km deep · 87 km away
  16. 2.985 km ESE of Atka, Alaska · 467 days ago · 35 km deep · 96 km away
  17. 3.2150 km ESE of Atka, Alaska · 464 days ago · 26 km deep · 25 km away
  18. 2.9145 km ESE of Atka, Alaska · 464 days ago · 35 km deep · 31 km away
  19. 3.4193 km WSW of Nikolski, Alaska · 464 days ago · 70 km deep · 35 km away

Before

  1. 2.389 km ESE of Atka, Alaska · 524 days ago · 38 km deep · 94 km away
  2. 3.7192 km ESE of Atka, Alaska · 528 days ago · 37 km deep · 27 km away
  3. 3.1177 km ESE of Atka, Alaska · 528 days ago · 35 km deep · 6 km away
  4. 3.097 km SE of Atka, Alaska · 529 days ago · 11 km deep · 93 km away
  5. 3.2178 km E of Atka, Alaska · 531 days ago · 35 km deep · 42 km away
  6. 3.5171 km E of Atka, Alaska · 535 days ago · 80 km deep · 40 km away
  7. 3.4131 km WSW of Nikolski, Alaska · 536 days ago · 35 km deep · 95 km away
  8. 2.7151 km WSW of Nikolski, Alaska · 536 days ago · 74 km deep · 82 km away
  9. 3.9173 km WSW of Nikolski, Alaska · 541 days ago · 38 km deep · 53 km away
  10. 3.8174 km WSW of Nikolski, Alaska · 541 days ago · 35 km deep · 52 km away
  11. 2.8159 km WSW of Nikolski, Alaska · 541 days ago · 51 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000pxts (also filed as ak0255m4ta4f). Read Sat, Oct 3, 2026, 2:38 AM UTC.