Alaska earthquakes

M5.8 earthquake 91 km SSE of Akhiok, Alaska

A magnitude 5.8 earthquake struck 91 km SSE of Akhiok, Alaska on Sat, Apr 18, 1964, 10:16 AM GMT-10 (20:16 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M5.8 47 km S of Akhiok, Alaska. This one was a foreshock.

Womens Bay forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
5.8 (mw), moderate
Local time
UTC
1964-04-18 20:16:18 UTC
Depth
22.4 km (13.9 mi), shallow
Epicenter
56.148° N, 153.792° 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: 2 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 5.847 km S of Akhiok, Alaska · 22782 days ago · 25 km deep · 46 km away
  2. 6.297 km SSE of Old Harbor, Alaska · 22778 days ago · 24 km deep · 92 km away

Before

  1. 6.199 km SSE of Old Harbor, Alaska · 22803 days ago · 10 km deep · 57 km away
  2. 6.495 km S of Old Harbor, Alaska · 22804 days ago · 23 km deep · 54 km away
  3. 6.254 km S of Akhiok, Alaska · 22805 days ago · 29 km deep · 45 km away
  4. 5.5111 km SSE of Old Harbor, Alaska · 22807 days ago · 11 km deep · 92 km away
  5. 6.398 km SE of Old Harbor, Alaska · 22808 days ago · 10 km deep · 97 km away
  6. 6.195 km SSE of Akhiok, Alaska · 22815 days ago · 28 km deep · 18 km away
  7. 6.395 km SSE of Akhiok, Alaska · 22815 days ago · 23 km deep · 27 km away
  8. 6.570 km SSW of Akhiok, Alaska · 22816 days ago · 23 km deep · 48 km away
  9. 6.378 km SSW of Akhiok, Alaska · 22816 days ago · 20 km deep · 42 km away
  10. 5.956 km SE of Old Harbor, Alaska · 22816 days ago · 22 km deep · 97 km away
  11. 6.195 km SSE of Old Harbor, Alaska · 22816 days ago · 15 km deep · 66 km away
  12. 5.489 km SSE of Old Harbor, Alaska · 22818 days ago · 25 km deep · 82 km away
  13. 5.687 km SSE of Old Harbor, Alaska · 22820 days ago · 20 km deep · 87 km away
  14. 5.8101 km SSE of Old Harbor, Alaska · 22821 days ago · 9 km deep · 76 km away
  15. 5.890 km SSE of Old Harbor, Alaska · 22821 days ago · 20 km deep · 75 km away
  16. 5.692 km SSE of Old Harbor, Alaska · 22821 days ago · 23 km deep · 83 km away
  17. 6.585 km SSE of Old Harbor, Alaska · 22821 days ago · 21 km deep · 59 km away
  18. 6.289 km S of Akhiok, Alaska · 22822 days ago · 22 km deep · 36 km away
  19. 6.576 km S of Akhiok, Alaska · 22823 days ago · 25 km deep · 29 km away
  20. 6.567 km S of Akhiok, Alaska · 22823 days ago · 21 km deep · 31 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem868902. Read Tue, Sep 22, 2026, 11:00 AM UTC.