Alaska earthquakes

M1.6 earthquake 263 km W of Adak, Alaska

A magnitude 1.6 earthquake struck 263 km W of Adak, Alaska on Fri, Sep 25, 2026, 2:25 PM GMT+12 (02:25 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.4 263 km WSW 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
1.6 (ml), micro
Local time
UTC
2026-09-25 02:25:10 UTC
Depth
6.5 km (4.1 mi), shallow
Epicenter
51.913° N, 179.536° E
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS. If you felt it, tell the USGS: every report sharpens the shaking map.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 1.9 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
283°, poorly surrounded by stations
Stations used
4

Nearby

Within 100 km, magnitude 1.5 and up: 6 since this one and 48 in the 30 days before it.

After

  1. 4.4263 km WSW of Adak, Alaska · 4 days ago · 18 km deep · 85 km away
  2. 4.4259 km WSW of Adak, Alaska · 3 days ago · 18 km deep · 77 km away
  3. 2.4222 km W of Adak, Alaska · 2 days ago · 85 km deep · 53 km away
  4. 2.0Rat Islands, Aleutian Islands, Alaska · 2 days ago · 186 km deep · 43 km away
  5. 2.5292 km WSW of Adak, Alaska · 41 hr ago · 30 km deep · 91 km away
  6. 3.1Rat Islands, Aleutian Islands, Alaska · 35 hr ago · 40 km deep · 79 km away

Before

  1. 2.7Rat Islands, Aleutian Islands, Alaska · 7 days ago · 35 km deep · 93 km away
  2. 2.3Rat Islands, Aleutian Islands, Alaska · 9 days ago · 147 km deep · 95 km away
  3. 2.3Rat Islands, Aleutian Islands, Alaska · 9 days ago · 65 km deep · 62 km away
  4. 2.7262 km WSW of Adak, Alaska · 10 days ago · 18 km deep · 93 km away
  5. 2.7Rat Islands, Aleutian Islands, Alaska · 10 days ago · 62 km deep · 80 km away
  6. 2.1259 km W of Adak, Alaska · 11 days ago · 99 km deep · 16 km away
  7. 3.3Rat Islands, Aleutian Islands, Alaska · 12 days ago · 53 km deep · 92 km away
  8. 2.4242 km W of Adak, Alaska · 13 days ago · 100 km deep · 28 km away
  9. 3.5Rat Islands, Aleutian Islands, Alaska · 15 days ago · 57 km deep · 62 km away
  10. 2.7Rat Islands, Aleutian Islands, Alaska · 15 days ago · 28 km deep · 70 km away
  11. 2.0Rat Islands, Aleutian Islands, Alaska · 15 days ago · 75 km deep · 66 km away
  12. 2.9271 km WSW of Adak, Alaska · 16 days ago · 67 km deep · 53 km away
  13. 2.7260 km WSW of Adak, Alaska · 16 days ago · 31 km deep · 69 km away
  14. 2.4Rat Islands, Aleutian Islands, Alaska · 16 days ago · 25 km deep · 83 km away
  15. 2.5281 km W of Adak, Alaska · 16 days ago · 72 km deep · 48 km away
  16. 2.1199 km W of Adak, Alaska · 16 days ago · 92 km deep · 71 km away
  17. 2.4253 km WNW of Adak, Alaska · 16 days ago · 5 km deep · 54 km away
  18. 2.2290 km WSW of Adak, Alaska · 17 days ago · 30 km deep · 63 km away
  19. 2.6Rat Islands, Aleutian Islands, Alaska · 19 days ago · 12 km deep · 73 km away
  20. 2.7253 km WSW of Adak, Alaska · 19 days ago · 17 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av94448421. Read Wed, Sep 30, 2026, 9:42 AM UTC.