Alaska earthquakes

M6.7 earthquake 192 km WSW of Adak, Alaska

A magnitude 6.7 earthquake struck 192 km WSW of Adak, Alaska on Tue, May 23, 1978, 8:16 PM GMT-10 (06:16 UTC), 25 km (16 mi) below the surface.

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The earthquake

Magnitude
6.7 (ms), strong
Local time
UTC
1978-05-24 06:16:55 UTC
Depth
25.0 km (15.5 mi), shallow
Epicenter
51.232° N, 179.213° 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.

How well it is located

Reviewed by a seismologist.

Stations used
344

Nearby

Within 100 km, magnitude 2.5 and up: 23 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 5.0187 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 14 km away
  2. 4.5199 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 30 km away
  3. 4.5206 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 15 km away
  4. 4.9194 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 5 km away
  5. 4.2196 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 4 km away
  6. 4.3176 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 39 km away
  7. 4.5185 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 9 km away
  8. 3.9173 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 26 km away
  9. 4.8191 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 4 km away
  10. 4.3178 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 19 km away
  11. 4.2199 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 20 km away
  12. 5.4196 km WSW of Adak, Alaska · 17654 days ago · 33 km deep · 12 km away
  13. 4.1201 km WSW of Adak, Alaska · 17653 days ago · 33 km deep · 13 km away
  14. 3.9174 km W of Adak, Alaska · 17653 days ago · 33 km deep · 55 km away
  15. 4.8198 km WSW of Adak, Alaska · 17653 days ago · 33 km deep · 28 km away
  16. 4.2201 km WSW of Adak, Alaska · 17653 days ago · 33 km deep · 11 km away
  17. 4.5197 km WSW of Adak, Alaska · 17653 days ago · 33 km deep · 6 km away
  18. 5.9194 km W of Adak, Alaska · 17625 days ago · 33 km deep · 44 km away
  19. 4.6173 km WSW of Adak, Alaska · 17623 days ago · 66 km deep · 19 km away
  20. 4.9176 km WSW of Adak, Alaska · 17609 days ago · 67 km deep · 16 km away
  21. 4.4156 km WSW of Adak, Alaska · 17605 days ago · 56 km deep · 48 km away
  22. 3.9159 km WSW of Adak, Alaska · 17596 days ago · 68 km deep · 43 km away
  23. 4.9124 km WSW of Adak, Alaska · 17595 days ago · 54 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000uq0 (also filed as gcmtb052478a, ushis3477, gcmt19780524061655, iscgem682691). Read Tue, Sep 22, 2026, 10:27 PM UTC.