Alaska earthquakes

M0.9 earthquake 149 km W of Adak, Alaska

A magnitude 0.9 earthquake struck 149 km W of Adak, Alaska on Fri, Sep 18, 2026, 8:38 AM HADT (17:38 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M2.0 133 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
0.9 (ml), micro
Local time
UTC
2026-09-18 17:38:19 UTC
Depth
15.3 km (9.5 mi), shallow
Epicenter
51.697° N, 178.778° W
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 2.4 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
178°
Stations used
5

Nearby

Within 100 km, magnitude 1.5 and up: 1 since this one and 130 in the 30 days before it.

After

  1. 2.0133 km WSW of Adak, Alaska · 8 hr ago · 15 km deep · 18 km away

Before

  1. 2.4143 km SW of Adak, Alaska · 5 days ago · 33 km deep · 77 km away
  2. 2.4242 km W of Adak, Alaska · 5 days ago · 100 km deep · 95 km away
  3. 2.9125 km WSW of Adak, Alaska · 6 days ago · 11 km deep · 60 km away
  4. 2.5135 km SW of Adak, Alaska · 6 days ago · 20 km deep · 68 km away
  5. 3.0132 km WSW of Adak, Alaska · 6 days ago · 36 km deep · 55 km away
  6. 2.2103 km WSW of Adak, Alaska · 6 days ago · 20 km deep · 64 km away
  7. 2.4134 km WSW of Adak, Alaska · 6 days ago · 29 km deep · 39 km away
  8. 3.4160 km WSW of Adak, Alaska · 7 days ago · 35 km deep · 37 km away
  9. 3.1113 km SW of Adak, Alaska · 7 days ago · 35 km deep · 78 km away
  10. 2.5162 km SW of Adak, Alaska · 8 days ago · 42 km deep · 72 km away
  11. 2.1199 km W of Adak, Alaska · 8 days ago · 92 km deep · 51 km away
  12. 2.0122 km SW of Adak, Alaska · 8 days ago · 36 km deep · 71 km away
  13. 2.3158 km SW of Adak, Alaska · 9 days ago · 15 km deep · 74 km away
  14. 2.2138 km SW of Adak, Alaska · 9 days ago · 27 km deep · 79 km away
  15. 3.5134 km SW of Adak, Alaska · 9 days ago · 20 km deep · 89 km away
  16. 2.1123 km SW of Adak, Alaska · 9 days ago · 23 km deep · 67 km away
  17. 2.7123 km SW of Adak, Alaska · 9 days ago · 21 km deep · 66 km away
  18. 1.876 km SW of Adak, Alaska · 9 days ago · 34 km deep · 94 km away
  19. 2.4130 km WSW of Adak, Alaska · 9 days ago · 28 km deep · 62 km away
  20. 3.9150 km WSW of Adak, Alaska · 9 days ago · 39 km deep · 56 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event av94437926. Read Tue, Sep 22, 2026, 10:05 AM UTC.