Alaska earthquakes

M5.5 earthquake 52 km SSE of Chenega, Alaska

A magnitude 5.5 earthquake struck 52 km SSE of Chenega, Alaska on Sat, Apr 4, 1964, 10:01 AM GMT-10 (20:01 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M5.8 66 km E of Chenega, Alaska. This one was a foreshock.

Seward forecastMore in Alaska

Map

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

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The earthquake

Magnitude
5.5 (mw), moderate
Local time
UTC
1964-04-04 20:01:43 UTC
Depth
19.7 km (12.2 mi), shallow
Epicenter
59.641° N, 147.597° 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: 4 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 5.866 km E of Chenega, Alaska · 22823 days ago · 15 km deep · 73 km away
  2. 5.687 km SE of Chenega, Alaska · 22820 days ago · 19 km deep · 43 km away
  3. 5.626 km SSE of Chenega, Alaska · 22818 days ago · 15 km deep · 26 km away
  4. 5.676 km SW of Cordova, Alaska · 22769 days ago · 10 km deep · 68 km away

Before

  1. 6.067 km E of Chenega, Alaska · 22825 days ago · 25 km deep · 57 km away
  2. 5.658 km WSW of Cordova, Alaska · 22825 days ago · 15 km deep · 87 km away
  3. 5.1103 km S of Chenega, Alaska · 22830 days ago · 26 km deep · 58 km away
  4. 5.558 km ESE of Chenega, Alaska · 22830 days ago · 15 km deep · 34 km away
  5. 5.775 km SE of Chenega, Alaska · 22830 days ago · 18 km deep · 35 km away
  6. 5.743 km WSW of Chenega, Alaska · 22830 days ago · 15 km deep · 66 km away
  7. 5.933 km SSE of Lowell Point, Alaska · 22831 days ago · 21 km deep · 90 km away
  8. 6.054 km SE of Lowell Point, Alaska · 22831 days ago · 18 km deep · 71 km away
  9. 5.593 km S of Chenega, Alaska · 22831 days ago · 22 km deep · 46 km away
  10. 6.356 km WSW of Cordova, Alaska · 22831 days ago · 10 km deep · 93 km away
  11. 6.360 km SW of Cordova, Alaska · 22831 days ago · 10 km deep · 83 km away
  12. 5.749 km WSW of Cordova, Alaska · 22831 days ago · 25 km deep · 95 km away
  13. 6.125 km WSW of Chenega, Alaska · 22831 days ago · 20 km deep · 61 km away
  14. 6.1101 km SE of Chenega, Alaska · 22831 days ago · 15 km deep · 62 km away
  15. 5.723 km SSE of Chenega, Alaska · 22832 days ago · 15 km deep · 30 km away
  16. 5.7Southern Alaska · 22832 days ago · 15 km deep · 46 km away
  17. 5.833 km ESE of Bear Creek, Alaska · 22832 days ago · 10 km deep · 85 km away
  18. 5.765 km SSW of Cordova, Alaska · 22832 days ago · 15 km deep · 81 km away
  19. 6.337 km SSE of Lowell Point, Alaska · 22832 days ago · 29 km deep · 92 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem868369. Read Wed, Sep 30, 2026, 8:54 PM UTC.