M4.5 earthquake 37 km SW of Adak, Alaska
A magnitude 4.5 earthquake struck 37 km SW of Adak, Alaska on Tue, Apr 5, 1983, 2:38 PM GMT-11 (01:38 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.0 89 km WNW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1983-04-06 01:38:20 UTC
- Depth
- 59.9 km (37.2 mi), shallow
- Epicenter
- 51.635° N, 177.026° 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.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.089 km WNW of Adak, Alaska · 15828 days ago · 109 km deep · 76 km away
- 4.685 km SSW of Adak, Alaska · 15825 days ago · 55 km deep · 52 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001u76. Read Tue, Sep 29, 2026, 8:02 PM UTC.