M4.2 earthquake 293 km WSW of Adak, Alaska
A magnitude 4.2 earthquake struck 293 km WSW of Adak, Alaska on Tue, Apr 30, 1974, 2:54 PM GMT+12 (02:54 UTC), 58 km (36 mi) below the surface.
A larger quake followed: M4.4 276 km WSW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1974-04-30 02:54:34 UTC
- Depth
- 58.0 km (36.0 mi), shallow
- Epicenter
- 51.132° N, 179.307° 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.
- Stations used
- 12
Nearby
Within 100 km, magnitude 1.5 and up: 2 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 usp0000657. Read Sun, Oct 4, 2026, 8:37 AM UTC.