Alaska earthquakes

M5.8 earthquake 101 km SSE of Old Harbor, Alaska

A magnitude 5.8 earthquake struck 101 km SSE of Old Harbor, Alaska on Mon, Mar 30, 1964, 3:32 AM GMT-10 (13:32 UTC), 9 km (6 mi) below the surface.

A larger quake followed: M6.0 94 km SE of Old Harbor, Alaska. This one was a foreshock.

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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
5.8 (mw), moderate
Local time
UTC
1964-03-30 13:32:19 UTC
Depth
9.2 km (5.7 mi), shallow
Epicenter
56.370° N, 152.630° 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
±0.53
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: 17 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 6.094 km SE of Old Harbor, Alaska · 22821 days ago · 15 km deep · 36 km away
  2. 5.687 km SSE of Old Harbor, Alaska · 22821 days ago · 20 km deep · 19 km away
  3. 5.489 km SSE of Old Harbor, Alaska · 22819 days ago · 25 km deep · 13 km away
  4. 6.195 km SSE of Old Harbor, Alaska · 22817 days ago · 15 km deep · 12 km away
  5. 5.956 km SE of Old Harbor, Alaska · 22817 days ago · 22 km deep · 48 km away
  6. 6.395 km SSE of Akhiok, Alaska · 22816 days ago · 23 km deep · 49 km away
  7. 6.195 km SSE of Akhiok, Alaska · 22816 days ago · 28 km deep · 58 km away
  8. 5.8193 km SSE of Old Harbor, Alaska · 22813 days ago · 15 km deep · 91 km away
  9. 6.398 km SE of Old Harbor, Alaska · 22809 days ago · 10 km deep · 22 km away
  10. 5.7133 km SE of Old Harbor, Alaska · 22809 days ago · 15 km deep · 60 km away
  11. 5.5111 km SSE of Old Harbor, Alaska · 22807 days ago · 11 km deep · 17 km away
  12. 6.495 km S of Old Harbor, Alaska · 22804 days ago · 23 km deep · 23 km away
  13. 6.199 km SSE of Old Harbor, Alaska · 22804 days ago · 10 km deep · 19 km away
  14. 5.891 km SSE of Akhiok, Alaska · 22802 days ago · 22 km deep · 76 km away
  15. 5.8102 km SE of Old Harbor, Alaska · 22784 days ago · 21 km deep · 37 km away
  16. 5.847 km S of Akhiok, Alaska · 22782 days ago · 25 km deep · 94 km away
  17. 6.297 km SSE of Old Harbor, Alaska · 22778 days ago · 24 km deep · 17 km away

Before

  1. 5.890 km SSE of Old Harbor, Alaska · 22822 days ago · 20 km deep · 11 km away
  2. 5.692 km SSE of Old Harbor, Alaska · 22822 days ago · 23 km deep · 12 km away
  3. 6.585 km SSE of Old Harbor, Alaska · 22822 days ago · 21 km deep · 25 km away
  4. 6.576 km S of Akhiok, Alaska · 22824 days ago · 25 km deep · 98 km away
  5. 6.567 km S of Akhiok, Alaska · 22824 days ago · 21 km deep · 94 km away
  6. 6.253 km ESE of Old Harbor, Alaska · 22824 days ago · 25 km deep · 75 km away
  7. 5.872 km SSE of Old Harbor, Alaska · 22824 days ago · 20 km deep · 30 km away
  8. 5.9114 km SE of Old Harbor, Alaska · 22824 days ago · 20 km deep · 31 km away
  9. 5.925 km E of Old Harbor, Alaska · 22824 days ago · 25 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem870177. Read Wed, Sep 23, 2026, 2:39 AM UTC.