Alaska earthquakes

M5.6 earthquake 82 km ENE of Kodiak, Alaska

A magnitude 5.6 earthquake struck 82 km ENE of Kodiak, Alaska on Sat, Mar 28, 1964, 2:25 AM GMT-10 (12:25 UTC), 22 km (14 mi) below the surface.

A larger quake followed: M5.6 108 km ENE of Chiniak, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
5.6 (mw), moderate
Local time
UTC
1964-03-28 12:25:54 UTC
Depth
22.0 km (13.7 mi), shallow
Epicenter
58.060° N, 151.115° 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: 8 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 5.6108 km ENE of Chiniak, Alaska · 22822 days ago · 20 km deep · 30 km away
  2. 5.668 km ESE of Chiniak, Alaska · 22822 days ago · 20 km deep · 86 km away
  3. 5.550 km ESE of Chiniak, Alaska · 22822 days ago · 21 km deep · 70 km away
  4. 5.5122 km ENE of Kodiak, Alaska · 22822 days ago · 23 km deep · 41 km away
  5. 5.5107 km ENE of Ouzinkie, Alaska · 22810 days ago · 18 km deep · 27 km away
  6. 5.647 km ESE of Chiniak, Alaska · 22807 days ago · 27 km deep · 69 km away
  7. 5.89 km ENE of Port Lions, Alaska · 22805 days ago · 22 km deep · 97 km away
  8. 5.541 km E of Chiniak, Alaska · 22803 days ago · 20 km deep · 57 km away

Before

  1. 5.53 km E of Kodiak, Alaska · 22823 days ago · 25 km deep · 79 km away
  2. 5.639 km ESE of Chiniak, Alaska · 22823 days ago · 23 km deep · 76 km away
  3. 5.884 km ENE of Kodiak, Alaska · 22823 days ago · 21 km deep · 4 km away
  4. 5.855 km SE of Chiniak, Alaska · 22823 days ago · 20 km deep · 92 km away
  5. 6.578 km ENE of Ouzinkie, Alaska · 22823 days ago · 25 km deep · 19 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event iscgem869911. Read Tue, Sep 22, 2026, 7:44 AM UTC.