M4.7 earthquake 211 km WSW of Adak, Alaska
A magnitude 4.7 earthquake struck 211 km WSW of Adak, Alaska on Wed, Feb 18, 1981, 12:44 PM GMT-11 (23:44 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1981-02-18 23:44:20 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 50.901° N, 179.248° 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 1.7 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 usp0001c8x. Read Mon, Sep 21, 2026, 4:53 AM UTC.