M5.3 earthquake 45 km SW of Adak, Alaska
A magnitude 5.3 earthquake struck 45 km SW of Adak, Alaska on Fri, Dec 27, 1985, 6:38 PM HAST (04:38 UTC), 52 km (33 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.3 (mb), moderate
- Local time
- UTC
- 1985-12-28 04:38:32 UTC
- Depth
- 52.4 km (32.6 mi), shallow
- Epicenter
- 51.629° N, 177.166° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearby
Within 100 km, magnitude 2.3 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002pgr. Read Tue, Sep 22, 2026, 3:30 PM UTC.