M4.8 earthquake 289 km WSW of Adak, Alaska
A magnitude 4.8 earthquake struck 289 km WSW of Adak, Alaska on Sat, Sep 14, 1985, 8:04 PM GMT+12 (08:04 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 290 km WSW 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
- 4.8 (mb), light
- Local time
- UTC
- 1985-09-14 08:04:52 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.403° N, 179.259° E
- 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 1.8 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002jrs. Read Tue, Sep 22, 2026, 7:47 PM UTC.