M4.7 earthquake 19 km WSW of Adak, Alaska
A magnitude 4.7 earthquake struck 19 km WSW of Adak, Alaska on Mon, May 22, 1978, 3:05 AM GMT-10 (13:05 UTC), 62 km (39 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
- 1978-05-22 13:05:47 UTC
- Depth
- 62.0 km (38.5 mi), shallow
- Epicenter
- 51.783° N, 176.882° 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
- 26
Nearby
Within 100 km, magnitude 1.7 and up: 0 in the 60 days after this one and 2 in the 30 days before it.
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000unt. Read Tue, Sep 22, 2026, 11:11 AM UTC.