M3.3 earthquake 20 km ENE of Point Possession, Alaska
A magnitude 3.3 earthquake struck 20 km ENE of Point Possession, Alaska on Mon, Oct 30, 1978, 1:11 AM GMT-10 (11:11 UTC), 48 km (30 mi) below the surface.
A larger quake followed: M3.9 17 km SSW 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
- 3.3 (mb), minor
- Local time
- UTC
- 1978-10-30 11:11:38 UTC
- Depth
- 48.0 km (29.8 mi), shallow
- Epicenter
- 60.963° N, 150.315° 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
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 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 usp0000x6m. Read Wed, Sep 30, 2026, 8:25 AM UTC.