M5.0 earthquake 61 km SSE of Adak, Alaska
A magnitude 5.0 earthquake struck 61 km SSE of Adak, Alaska on Sat, Dec 1, 1984, 8:45 AM HAST (18:45 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.3 92 km ESE 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
- 5.0 (mb), moderate
- Local time
- UTC
- 1984-12-01 18:45:24 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.355° N, 176.342° 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
Nearby
Within 100 km, magnitude 2.0 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00029ph. Read Tue, Sep 22, 2026, 6:14 AM UTC.