M3.5 earthquake 9 km S of Point Possession, Alaska
A magnitude 3.5 earthquake struck 9 km S of Point Possession, Alaska on Sun, Apr 20, 1980, 12:27 AM GMT-10 (10:27 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M4.5 11 km WSW of Susitna, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.5 (ml), minor
- Local time
- UTC
- 1980-04-20 10:27:31 UTC
- Depth
- 37.0 km (23.0 mi), shallow
- Epicenter
- 60.842° N, 150.710° 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
- 13
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 usp00016rr. Read Tue, Sep 22, 2026, 8:47 PM UTC.