Alaska earthquakes

M3.6 earthquake 266 km SW of Adak, Alaska

A magnitude 3.6 earthquake struck 266 km SW of Adak, Alaska on Sun, Jun 1, 2025, 11:45 PM GMT-12 (11:45 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.7 269 km SW of Adak, 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
3.6 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-06-02 11:45:39 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.227° N, 179.392° W
Region
Alaska
Strongest shaking
I, not felt shaking
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
3.6mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.089 · 32 stations
3.5ML, local (Richter)Alaska Earthquake CenterPreliminary

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
I, not felt shaking
Peak ground acceleration
0.0% of gravity
Peak ground velocity
0.0 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

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 5.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
198°, poorly surrounded by stations
Stations used
60

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 3.7269 km SW of Adak, Alaska · 486 days ago · 10 km deep · 4 km away
  2. 1.7252 km WSW of Adak, Alaska · 485 days ago · 20 km deep · 87 km away
  3. 2.2292 km SW of Adak, Alaska · 484 days ago · 9 km deep · 30 km away
  4. 2.2260 km WSW of Adak, Alaska · 481 days ago · 11 km deep · 83 km away
  5. 3.2Rat Islands, Aleutian Islands, Alaska · 479 days ago · 10 km deep · 65 km away
  6. 2.0202 km WSW of Adak, Alaska · 476 days ago · 13 km deep · 100 km away
  7. 3.2201 km SW of Adak, Alaska · 473 days ago · 10 km deep · 75 km away
  8. 3.0295 km SW of Adak, Alaska · 473 days ago · 10 km deep · 40 km away
  9. 3.0222 km SW of Adak, Alaska · 472 days ago · 10 km deep · 64 km away
  10. 2.5217 km SW of Adak, Alaska · 471 days ago · 10 km deep · 68 km away
  11. 3.0Andreanof Islands, Aleutian Islands, Alaska · 465 days ago · 10 km deep · 43 km away
  12. 2.6247 km WSW of Adak, Alaska · 463 days ago · 10 km deep · 86 km away
  13. 2.1172 km SW of Adak, Alaska · 455 days ago · 26 km deep · 97 km away
  14. 1.9217 km WSW of Adak, Alaska · 446 days ago · 13 km deep · 92 km away
  15. 2.6247 km WSW of Adak, Alaska · 443 days ago · 35 km deep · 97 km away
  16. 3.0Rat Islands, Aleutian Islands, Alaska · 438 days ago · 10 km deep · 55 km away
  17. 1.9202 km WSW of Adak, Alaska · 434 days ago · 18 km deep · 90 km away
  18. 2.9246 km SSW of Adak, Alaska · 432 days ago · 10 km deep · 84 km away
  19. 2.0207 km WSW of Adak, Alaska · 430 days ago · 13 km deep · 93 km away

Before

  1. 2.9239 km WSW of Adak, Alaska · 495 days ago · 35 km deep · 95 km away
  2. 2.2287 km WSW of Adak, Alaska · 501 days ago · 23 km deep · 88 km away
  3. 2.9210 km WSW of Adak, Alaska · 507 days ago · 30 km deep · 80 km away
  4. 1.9203 km WSW of Adak, Alaska · 514 days ago · 20 km deep · 100 km away
  5. 2.3250 km WSW of Adak, Alaska · 515 days ago · 15 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000qhh2 (also filed as ak0257181llj). Read Fri, Oct 2, 2026, 6:30 AM UTC.