M4.5 earthquake 202 km W of Adak, Alaska
A magnitude 4.5 earthquake struck 202 km W of Adak, Alaska on Wed, Jun 4, 1975, 10:35 AM GMT-10 (20:35 UTC), 75 km (47 mi) below the surface.
A larger quake followed: M5.1 263 km W 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-06-04 20:35:56 UTC
- Depth
- 75.0 km (46.6 mi), intermediate-depth
- Epicenter
- 51.938° N, 179.579° 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: 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 usp0000baw. Read Sat, Oct 3, 2026, 9:19 AM UTC.