M4.9 earthquake 273 km WSW of Adak, Alaska
A magnitude 4.9 earthquake struck 273 km WSW of Adak, Alaska on Fri, Mar 22, 1985, 6:14 PM GMT+12 (06:14 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
- 4.9 (mb), light
- Local time
- UTC
- 1985-03-22 06:14:07 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.220° N, 179.566° 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 1.9 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.9191 km WSW of Adak, Alaska · 15156 days ago · 33 km deep · 86 km away
- 4.2Rat Islands, Aleutian Islands, Alaska · 15131 days ago · 67 km deep · 66 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002d3t. Read Tue, Sep 22, 2026, 2:51 AM UTC.