M4.3 earthquake 37 km ENE of Old Harbor, Alaska
A magnitude 4.3 earthquake struck 37 km ENE of Old Harbor, Alaska on Thu, Apr 27, 1978, 4:52 PM GMT-10 (02:52 UTC), 70 km (43 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1978-04-28 02:52:58 UTC
- Depth
- 70.0 km (43.5 mi), intermediate-depth
- Epicenter
- 57.286° N, 152.698° 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
- 18
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 10 in the 30 days before it.
After
Before
- 4.778 km SSE of Old Harbor, Alaska · 17680 days ago · 33 km deep · 79 km away
- 4.7Kodiak Island region, Alaska · 17685 days ago · 33 km deep · 90 km away
- 4.968 km SSE of Old Harbor, Alaska · 17691 days ago · 24 km deep · 69 km away
- 5.175 km SSE of Old Harbor, Alaska · 17695 days ago · 27 km deep · 79 km away
- 5.193 km SSE of Old Harbor, Alaska · 17695 days ago · 24 km deep · 92 km away
- 4.776 km SSE of Old Harbor, Alaska · 17695 days ago · 16 km deep · 73 km away
- 4.62 km ENE of Womens Bay, Alaska · 17695 days ago · 87 km deep · 45 km away
- 4.791 km SSE of Old Harbor, Alaska · 17695 days ago · 33 km deep · 88 km away
- 5.239 km SE of Akhiok, Alaska · 17695 days ago · 23 km deep · 83 km away
- 6.694 km SSE of Old Harbor, Alaska · 17695 days ago · 14 km deep · 96 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000uad. Read Tue, Sep 22, 2026, 6:40 AM UTC.