M4.7 earthquake 138 km S of False Pass, Alaska
A magnitude 4.7 earthquake struck 138 km S of False Pass, Alaska on Fri, Oct 18, 1974, 4:02 AM GMT-10 (14:02 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M5.0 68 km SSE of Akutan, 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), light
- Local time
- UTC
- 1974-10-18 14:02:33 UTC
- Depth
- 42.0 km (26.1 mi), shallow
- Epicenter
- 53.632° N, 163.800° 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
- 32
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.068 km SSE of Akutan, Alaska · 18935 days ago · 57 km deep · 96 km away
- 5.3138 km S of False Pass, Alaska · 18927 days ago · 32 km deep · 7 km away
- 4.3127 km S of False Pass, Alaska · 18916 days ago · 33 km deep · 24 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00008fa. Read Wed, Sep 23, 2026, 4:24 AM UTC.