Alaska earthquakes

M4.7 earthquake 78 km SSE of Old Harbor, Alaska

A magnitude 4.7 earthquake struck 78 km SSE of Old Harbor, Alaska on Wed, Apr 26, 1978, 3:41 PM GMT-10 (01:41 UTC), 33 km (21 mi) below the surface.

Womens Bay 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
4.7 (mb), light
Local time
UTC
1978-04-27 01:41:17 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
56.573° N, 152.723° 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.

Depth from
OPERATOR_ASSIGNED
Stations used
80

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 14 in the 30 days before it.

After

  1. 4.337 km ENE of Old Harbor, Alaska · 17679 days ago · 70 km deep · 79 km away
  2. 4.7104 km SSE of Old Harbor, Alaska · 17656 days ago · 33 km deep · 26 km away
  3. 4.228 km ENE of Old Harbor, Alaska · 17625 days ago · 83 km deep · 80 km away

Before

  1. 4.7Kodiak Island region, Alaska · 17685 days ago · 33 km deep · 12 km away
  2. 4.596 km SSE of Old Harbor, Alaska · 17689 days ago · 33 km deep · 23 km away
  3. 4.968 km SSE of Old Harbor, Alaska · 17691 days ago · 24 km deep · 10 km away
  4. 4.397 km SSE of Old Harbor, Alaska · 17693 days ago · 33 km deep · 25 km away
  5. 4.5134 km SSE of Old Harbor, Alaska · 17694 days ago · 33 km deep · 56 km away
  6. 3.5172 km SSE of Old Harbor, Alaska · 17695 days ago · 33 km deep · 94 km away
  7. 5.175 km SSE of Old Harbor, Alaska · 17695 days ago · 27 km deep · 7 km away
  8. 4.6103 km SSE of Old Harbor, Alaska · 17695 days ago · 19 km deep · 25 km away
  9. 5.193 km SSE of Old Harbor, Alaska · 17695 days ago · 24 km deep · 15 km away
  10. 4.6105 km SSE of Old Harbor, Alaska · 17695 days ago · 15 km deep · 27 km away
  11. 4.776 km SSE of Old Harbor, Alaska · 17695 days ago · 16 km deep · 8 km away
  12. 4.791 km SSE of Old Harbor, Alaska · 17695 days ago · 33 km deep · 15 km away
  13. 5.239 km SE of Akhiok, Alaska · 17695 days ago · 23 km deep · 59 km away
  14. 6.694 km SSE of Old Harbor, Alaska · 17695 days ago · 14 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000u9w. Read Tue, Sep 22, 2026, 11:15 AM UTC.