M4.5 earthquake 131 km WSW of Adak, Alaska
A magnitude 4.5 earthquake struck 131 km WSW of Adak, Alaska on Sat, Jun 22, 1974, 10:35 AM GMT-10 (20:35 UTC), 49 km (30 mi) below the surface.
A larger quake followed: M5.8 109 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
- 4.5 (mb), light
- Local time
- UTC
- 1974-06-22 20:35:37 UTC
- Depth
- 49.0 km (30.4 mi), shallow
- Epicenter
- 51.245° N, 178.237° 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
- 16
Nearby
Within 100 km, magnitude 1.5 and up: 4 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 usp00006up. Read Tue, Sep 29, 2026, 6:12 PM UTC.