M4.9 earthquake 209 km WNW of Adak, Alaska
A magnitude 4.9 earthquake struck 209 km WNW of Adak, Alaska on Wed, Feb 18, 1976, 11:28 PM GMT-11 (10:28 UTC), 212 km (132 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
- 1976-02-19 10:28:33 UTC
- Depth
- 212.0 km (131.7 mi), intermediate-depth
- Epicenter
- 52.495° N, 179.521° 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.
- Stations used
- 55
Nearby
Within 100 km, magnitude 1.9 and up: 1 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 usp0000f4a. Read Tue, Sep 22, 2026, 7:48 PM UTC.