M4.3 earthquake 106 km SSE of Old Harbor, Alaska
A magnitude 4.3 earthquake struck 106 km SSE of Old Harbor, Alaska on Thu, Jan 20, 1983, 6:36 PM GMT-10 (04:36 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.7 103 km S of Akhiok, Alaska. This one was a foreshock.
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
- 1983-01-21 04:36:52 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 56.278° N, 152.892° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 7 in the 30 days before it.
After
- 4.7103 km S of Akhiok, Alaska · 15948 days ago · 33 km deep · 99 km away
- 4.4130 km S of Akhiok, Alaska · 15943 days ago · 33 km deep · 89 km away
- 4.1121 km SE of Old Harbor, Alaska · 15897 days ago · 33 km deep · 69 km away
Before
- 4.4116 km S of Akhiok, Alaska · 15955 days ago · 33 km deep · 90 km away
- 3.7119 km S of Akhiok, Alaska · 15956 days ago · 33 km deep · 83 km away
- 5.1110 km S of Akhiok, Alaska · 15956 days ago · 33 km deep · 88 km away
- 4.4110 km S of Akhiok, Alaska · 15956 days ago · 33 km deep · 86 km away
- 4.4114 km S of Akhiok, Alaska · 15957 days ago · 33 km deep · 72 km away
- 4.7110 km S of Akhiok, Alaska · 15957 days ago · 33 km deep · 88 km away
- 5.8115 km S of Akhiok, Alaska · 15957 days ago · 33 km deep · 88 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ses. Read Tue, Sep 22, 2026, 10:02 AM UTC.