M4.0 earthquake 68 km SW of False Pass, Alaska
A magnitude 4.0 earthquake struck 68 km SW of False Pass, Alaska on Sat, Dec 24, 1977, 2:44 PM GMT-11 (01:44 UTC), 121 km (75 mi) below the surface.
A larger quake followed: M4.8 87 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
- 4.0 (mb), light
- Local time
- UTC
- 1977-12-25 01:44:17 UTC
- Depth
- 121.0 km (75.2 mi), intermediate-depth
- Epicenter
- 54.456° N, 164.218° 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
- 14
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 usp0000s7n. Read Tue, Sep 29, 2026, 4:27 AM UTC.