Alaska earthquakes

M5.5 earthquake 41 km E of Chiniak, Alaska

A magnitude 5.5 earthquake struck 41 km E of Chiniak, Alaska on Thu, Apr 16, 1964, 11:09 PM GMT-10 (09:09 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M5.6 45 km SSE of Chiniak, Alaska. This one was a foreshock.

Kodiak 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
5.5 (mw), moderate
Local time
UTC
1964-04-17 09:09:09 UTC
Depth
19.6 km (12.2 mi), shallow
Epicenter
57.618° N, 151.588° 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: 3 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 5.645 km SSE of Chiniak, Alaska · 22797 days ago · 25 km deep · 44 km away
  2. 5.5119 km ENE of Kodiak, Alaska · 22762 days ago · 24 km deep · 87 km away
  3. 5.420 km NNE of Ouzinkie, Alaska · 22753 days ago · 13 km deep · 70 km away

Before

  1. 5.89 km ENE of Port Lions, Alaska · 22805 days ago · 22 km deep · 75 km away
  2. 5.647 km ESE of Chiniak, Alaska · 22807 days ago · 27 km deep · 16 km away
  3. 5.5107 km ENE of Ouzinkie, Alaska · 22810 days ago · 18 km deep · 83 km away
  4. 5.784 km SE of Chiniak, Alaska · 22819 days ago · 23 km deep · 61 km away
  5. 5.5122 km ENE of Kodiak, Alaska · 22822 days ago · 23 km deep · 89 km away
  6. 5.550 km ESE of Chiniak, Alaska · 22822 days ago · 21 km deep · 18 km away
  7. 5.668 km ESE of Chiniak, Alaska · 22822 days ago · 20 km deep · 40 km away
  8. 5.6108 km ENE of Chiniak, Alaska · 22822 days ago · 20 km deep · 72 km away
  9. 5.682 km ENE of Kodiak, Alaska · 22823 days ago · 22 km deep · 57 km away
  10. 6.253 km ESE of Old Harbor, Alaska · 22823 days ago · 25 km deep · 83 km away
  11. 5.53 km E of Kodiak, Alaska · 22823 days ago · 25 km deep · 49 km away
  12. 5.639 km ESE of Chiniak, Alaska · 22823 days ago · 23 km deep · 20 km away
  13. 5.884 km ENE of Kodiak, Alaska · 22823 days ago · 21 km deep · 57 km away
  14. 5.855 km SE of Chiniak, Alaska · 22823 days ago · 20 km deep · 38 km away
  15. 6.578 km ENE of Ouzinkie, Alaska · 22823 days ago · 25 km deep · 68 km away
  16. 5.925 km E of Old Harbor, Alaska · 22823 days ago · 25 km deep · 93 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem868850. Read Tue, Sep 22, 2026, 7:41 AM UTC.