M5.1 earthquake 75 km SSE of Old Harbor, Alaska
A magnitude 5.1 earthquake struck 75 km SSE of Old Harbor, Alaska on Tue, Apr 11, 1978, 11:33 PM GMT-10 (09:33 UTC), 27 km (17 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1978-04-12 09:33:38 UTC
- Depth
- 27.0 km (16.8 mi), shallow
- Epicenter
- 56.576° N, 152.841° 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
- 135
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 9 in the 60 days after this one and 8 in the 30 days before it.
After
- 3.5172 km SSE of Old Harbor, Alaska · 17695 days ago · 33 km deep · 98 km away
- 4.5134 km SSE of Old Harbor, Alaska · 17694 days ago · 33 km deep · 61 km away
- 4.397 km SSE of Old Harbor, Alaska · 17693 days ago · 33 km deep · 23 km away
- 4.968 km SSE of Old Harbor, Alaska · 17691 days ago · 24 km deep · 11 km away
- 4.596 km SSE of Old Harbor, Alaska · 17689 days ago · 33 km deep · 22 km away
- 4.7Kodiak Island region, Alaska · 17685 days ago · 33 km deep · 10 km away
- 4.778 km SSE of Old Harbor, Alaska · 17680 days ago · 33 km deep · 7 km away
- 4.337 km ENE of Old Harbor, Alaska · 17679 days ago · 70 km deep · 79 km away
- 4.7104 km SSE of Old Harbor, Alaska · 17656 days ago · 33 km deep · 29 km away
Before
- 4.6103 km SSE of Old Harbor, Alaska · 17695 days ago · 19 km deep · 29 km away
- 5.193 km SSE of Old Harbor, Alaska · 17695 days ago · 24 km deep · 20 km away
- 4.6105 km SSE of Old Harbor, Alaska · 17695 days ago · 15 km deep · 30 km away
- 4.776 km SSE of Old Harbor, Alaska · 17695 days ago · 16 km deep · 14 km away
- 4.791 km SSE of Old Harbor, Alaska · 17695 days ago · 33 km deep · 21 km away
- 5.239 km SE of Akhiok, Alaska · 17695 days ago · 23 km deep · 52 km away
- 6.694 km SSE of Old Harbor, Alaska · 17695 days ago · 14 km deep · 19 km away
- 4.06 km N of Akhiok, Alaska · 17713 days ago · 33 km deep · 94 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000u25. Read Tue, Sep 22, 2026, 11:14 AM UTC.