M5.0 earthquake 196 km WSW of Adak, Alaska
A magnitude 5.0 earthquake struck 196 km WSW of Adak, Alaska on Thu, Oct 30, 1975, 1:36 AM GMT-11 (12:36 UTC), 50 km (31 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (ms), moderate
- Local time
- UTC
- 1975-10-30 12:36:11 UTC
- Depth
- 50.0 km (31.1 mi), shallow
- Epicenter
- 51.360° N, 179.345° 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
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 62
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.5182 km WSW of Adak, Alaska · 18579 days ago · 57 km deep · 14 km away
- 4.5114 km WSW of Adak, Alaska · 18548 days ago · 66 km deep · 85 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000dbh. Read Tue, Sep 22, 2026, 9:12 AM UTC.