Alaska earthquakes

M6.5 earthquake 85 km SSE of Old Harbor, Alaska

A magnitude 6.5 earthquake struck 85 km SSE of Old Harbor, Alaska on Sun, Mar 29, 1964, 4:18 PM GMT-10 (02:18 UTC), 21 km (13 mi) below the surface.

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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
6.5 (mw), strong
Local time
UTC
1964-03-30 02:18:07 UTC
Depth
21.2 km (13.2 mi), shallow
Epicenter
56.455° N, 153.008° 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.

Magnitude uncertainty
±0.20
Depth from
From location

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.5 and up: 22 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 5.692 km SSE of Old Harbor, Alaska · 22821 days ago · 23 km deep · 26 km away
  2. 5.890 km SSE of Old Harbor, Alaska · 22821 days ago · 20 km deep · 18 km away
  3. 5.8101 km SSE of Old Harbor, Alaska · 22821 days ago · 9 km deep · 25 km away
  4. 6.094 km SE of Old Harbor, Alaska · 22821 days ago · 15 km deep · 52 km away
  5. 5.687 km SSE of Old Harbor, Alaska · 22820 days ago · 20 km deep · 29 km away
  6. 5.489 km SSE of Old Harbor, Alaska · 22818 days ago · 25 km deep · 24 km away
  7. 6.195 km SSE of Old Harbor, Alaska · 22816 days ago · 15 km deep · 14 km away
  8. 5.956 km SE of Old Harbor, Alaska · 22816 days ago · 22 km deep · 41 km away
  9. 6.378 km SSW of Akhiok, Alaska · 22816 days ago · 20 km deep · 91 km away
  10. 6.570 km SSW of Akhiok, Alaska · 22816 days ago · 23 km deep · 92 km away
  11. 6.395 km SSE of Akhiok, Alaska · 22815 days ago · 23 km deep · 35 km away
  12. 6.195 km SSE of Akhiok, Alaska · 22815 days ago · 28 km deep · 44 km away
  13. 6.398 km SE of Old Harbor, Alaska · 22808 days ago · 10 km deep · 41 km away
  14. 5.7133 km SE of Old Harbor, Alaska · 22808 days ago · 15 km deep · 83 km away
  15. 5.5111 km SSE of Old Harbor, Alaska · 22807 days ago · 11 km deep · 42 km away
  16. 6.254 km S of Akhiok, Alaska · 22805 days ago · 29 km deep · 77 km away
  17. 6.495 km S of Old Harbor, Alaska · 22803 days ago · 23 km deep · 10 km away
  18. 6.199 km SSE of Old Harbor, Alaska · 22803 days ago · 10 km deep · 14 km away
  19. 5.891 km SSE of Akhiok, Alaska · 22801 days ago · 22 km deep · 59 km away
  20. 5.8102 km SE of Old Harbor, Alaska · 22784 days ago · 21 km deep · 55 km away
  21. 5.847 km S of Akhiok, Alaska · 22782 days ago · 25 km deep · 70 km away
  22. 6.297 km SSE of Old Harbor, Alaska · 22777 days ago · 24 km deep · 36 km away

Before

  1. 6.289 km S of Akhiok, Alaska · 22822 days ago · 22 km deep · 91 km away
  2. 6.576 km S of Akhiok, Alaska · 22823 days ago · 25 km deep · 77 km away
  3. 6.567 km S of Akhiok, Alaska · 22823 days ago · 21 km deep · 72 km away
  4. 6.253 km ESE of Old Harbor, Alaska · 22823 days ago · 25 km deep · 73 km away
  5. 5.872 km SSE of Old Harbor, Alaska · 22823 days ago · 20 km deep · 15 km away
  6. 5.9114 km SE of Old Harbor, Alaska · 22823 days ago · 20 km deep · 55 km away
  7. 5.925 km E of Old Harbor, Alaska · 22823 days ago · 25 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem870136 (also filed as ushis2669). Read Tue, Sep 22, 2026, 5:29 AM UTC.