M4.7 earthquake 87 km SW of Unalaska, Alaska
A magnitude 4.7 earthquake struck 87 km SW of Unalaska, Alaska on Sun, Nov 30, 1975, 4:05 PM GMT-10 (02:05 UTC), 53 km (33 mi) below the surface.
A larger quake followed: M5.2 110 km S of Unalaska, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-12-01 02:05:23 UTC
- Depth
- 53.0 km (32.9 mi), shallow
- Epicenter
- 53.304° N, 167.442° 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
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.3126 km SSW of Unalaska, Alaska · 18571 days ago · 30 km deep · 69 km away
- 4.241 km SE of Nikolski, Alaska · 18570 days ago · 61 km deep · 92 km away
- 4.9125 km S of Unalaska, Alaska · 18563 days ago · 19 km deep · 72 km away
- 4.140 km S of Unalaska, Alaska · 18560 days ago · 53 km deep · 60 km away
- 5.2110 km S of Unalaska, Alaska · 18537 days ago · 40 km deep · 65 km away
- 3.739 km S of Unalaska, Alaska · 18518 days ago · 104 km deep · 67 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000dt5. Read Mon, Oct 5, 2026, 12:56 AM UTC.