M4.8 earthquake 66 km E of Akutan, Alaska
A magnitude 4.8 earthquake struck 66 km E of Akutan, Alaska on Thu, Aug 24, 1978, 8:56 PM GMT-9 (05:56 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M5.1 98 km SSW of False Pass, 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 (mb), light
- Local time
- UTC
- 1978-08-25 05:56:50 UTC
- Depth
- 64.0 km (39.8 mi), shallow
- Epicenter
- 54.135° N, 164.757° 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
- 101
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 usp0000w74. Read Tue, Sep 22, 2026, 8:46 PM UTC.