M5.0 earthquake 84 km WSW of Atka, Alaska
A magnitude 5.0 earthquake struck 84 km WSW of Atka, Alaska on Mon, Mar 17, 1975, 7:39 AM GMT-10 (17:39 UTC), 48 km (30 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-03-17 17:39:29 UTC
- Depth
- 48.0 km (29.8 mi), shallow
- Epicenter
- 51.845° N, 175.286° 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
- 82
Nearby
Within 100 km, magnitude 2.0 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 usp0000a9b. Read Sun, Oct 4, 2026, 6:18 AM UTC.