Alaska earthquakes

M4.1 earthquake 93 km SE of Old Harbor, Alaska

A magnitude 4.1 earthquake struck 93 km SE of Old Harbor, Alaska on Fri, Aug 2, 1974, 8:03 AM GMT-9 (17:03 UTC), 36 km (22 mi) below the surface.

A larger quake followed: M5.3 86 km SE of Old Harbor, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.1 (mb), light
Local time
UTC
1974-08-02 17:03:02 UTC
Depth
36.0 km (22.4 mi), shallow
Epicenter
56.597° N, 152.240° 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.

Stations used
19

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 19 in the 30 days before it.

After

  1. 4.1102 km SE of Old Harbor, Alaska · 19050 days ago · 33 km deep · 9 km away
  2. 4.393 km ESE of Old Harbor, Alaska · 19049 days ago · 40 km deep · 23 km away
  3. 4.788 km SE of Old Harbor, Alaska · 19047 days ago · 16 km deep · 15 km away
  4. 4.676 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 17 km away
  5. 4.676 km SE of Old Harbor, Alaska · 19047 days ago · 32 km deep · 21 km away
  6. 5.386 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 7 km away
  7. 3.969 km SE of Old Harbor, Alaska · 19047 days ago · 67 km deep · 29 km away
  8. 4.675 km SE of Old Harbor, Alaska · 19046 days ago · 33 km deep · 19 km away
  9. 4.585 km ESE of Old Harbor, Alaska · 19046 days ago · 33 km deep · 23 km away
  10. 5.1105 km SSE of Chiniak, Alaska · 19006 days ago · 17 km deep · 38 km away

Before

  1. 4.058 km S of Chiniak, Alaska · 19052 days ago · 64 km deep · 55 km away
  2. 4.081 km SE of Old Harbor, Alaska · 19052 days ago · 33 km deep · 20 km away
  3. 3.893 km SE of Old Harbor, Alaska · 19052 days ago · 33 km deep · 15 km away
  4. 3.993 km SE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 6 km away
  5. 4.192 km SE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 10 km away
  6. 6.089 km SE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 4 km away
  7. 3.899 km SE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 22 km away
  8. 4.2101 km SE of Old Harbor, Alaska · 19053 days ago · 16 km deep · 11 km away
  9. 3.9101 km SSE of Chiniak, Alaska · 19053 days ago · 33 km deep · 28 km away
  10. 4.397 km SE of Old Harbor, Alaska · 19053 days ago · 15 km deep · 13 km away
  11. 4.486 km SE of Old Harbor, Alaska · 19053 days ago · 16 km deep · 13 km away
  12. 3.891 km SE of Old Harbor, Alaska · 19053 days ago · 27 km deep · 9 km away
  13. 4.386 km SE of Old Harbor, Alaska · 19053 days ago · 7 km deep · 12 km away
  14. 4.597 km SE of Old Harbor, Alaska · 19053 days ago · 19 km deep · 12 km away
  15. 3.898 km ESE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 24 km away
  16. 4.687 km SE of Old Harbor, Alaska · 19053 days ago · 15 km deep · 9 km away
  17. 6.394 km SE of Old Harbor, Alaska · 19053 days ago · 33 km deep · 12 km away
  18. 6.197 km SE of Old Harbor, Alaska · 19053 days ago · 10 km deep · 10 km away
  19. 4.690 km SE of Old Harbor, Alaska · 19053 days ago · 24 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00007f9. Read Wed, Sep 30, 2026, 12:02 AM UTC.