M4.8 earthquake 130 km E of Chiniak, Alaska
A magnitude 4.8 earthquake struck 130 km E of Chiniak, Alaska on Sun, May 25, 1975, 6:47 AM GMT-9 (15:47 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.6 132 km ESE of Chiniak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (ms), light
- Local time
- UTC
- 1975-05-25 15:47:30 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 57.501° N, 150.117° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 67
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 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 usp0000b66. Read Tue, Sep 22, 2026, 11:35 AM UTC.