Alaska earthquakes

M2.0 earthquake 133 km WSW of Adak, Alaska

A magnitude 2.0 earthquake struck 133 km WSW of Adak, Alaska on Mon, Sep 21, 2026, 5:20 PM HADT (02:20 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M3.5 148 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
2.0 (ml), micro
Local time
UTC
2026-09-22 02:20:00 UTC
Depth
14.6 km (9.1 mi), shallow
Epicenter
51.634° N, 178.534° 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 6.9 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.30
Station coverage gap
165°
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 1 since this one and 129 in the 30 days before it.

After

  1. 3.5148 km WSW of Adak, Alaska · 17 hr ago · 0 km deep · 42 km away

Before

  1. 2.2143 km W of Adak, Alaska · 5 days ago · 97 km deep · 11 km away
  2. 2.4143 km SW of Adak, Alaska · 6 days ago · 33 km deep · 64 km away
  3. 2.9125 km WSW of Adak, Alaska · 6 days ago · 11 km deep · 44 km away
  4. 2.5135 km SW of Adak, Alaska · 6 days ago · 20 km deep · 54 km away
  5. 3.0132 km WSW of Adak, Alaska · 6 days ago · 36 km deep · 41 km away
  6. 2.2103 km WSW of Adak, Alaska · 6 days ago · 20 km deep · 46 km away
  7. 2.4134 km WSW of Adak, Alaska · 6 days ago · 29 km deep · 26 km away
  8. 3.4160 km WSW of Adak, Alaska · 7 days ago · 35 km deep · 35 km away
  9. 3.1113 km SW of Adak, Alaska · 7 days ago · 35 km deep · 60 km away
  10. 3.0134 km SW of Adak, Alaska · 8 days ago · 15 km deep · 87 km away
  11. 2.5162 km SW of Adak, Alaska · 8 days ago · 42 km deep · 64 km away
  12. 2.156 km SW of Adak, Alaska · 8 days ago · 18 km deep · 97 km away
  13. 2.1199 km W of Adak, Alaska · 9 days ago · 92 km deep · 68 km away
  14. 2.0122 km SW of Adak, Alaska · 9 days ago · 36 km deep · 55 km away
  15. 2.3158 km SW of Adak, Alaska · 9 days ago · 15 km deep · 65 km away
  16. 2.2138 km SW of Adak, Alaska · 9 days ago · 27 km deep · 65 km away
  17. 3.5134 km SW of Adak, Alaska · 10 days ago · 20 km deep · 74 km away
  18. 2.1135 km SW of Adak, Alaska · 10 days ago · 23 km deep · 94 km away
  19. 2.1123 km SW of Adak, Alaska · 10 days ago · 23 km deep · 51 km away
  20. 2.7123 km SW of Adak, Alaska · 10 days ago · 21 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event aka2026stulbq (also filed as av94442721). Read Tue, Sep 22, 2026, 10:30 PM UTC.