M4.8 earthquake 180 km WSW of Adak, Alaska
A magnitude 4.8 earthquake struck 180 km WSW of Adak, Alaska on Mon, Aug 26, 1985, 12:06 AM HADT (09:06 UTC), 33 km (21 mi) below the surface.
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
- 1985-08-26 09:06:02 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.263° N, 179.041° 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 1.8 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.5142 km WSW of Adak, Alaska · 14992 days ago · 33 km deep · 38 km away
- 4.6195 km WSW of Adak, Alaska · 14978 days ago · 33 km deep · 36 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002j5k. Read Tue, Sep 22, 2026, 5:29 AM UTC.