M4.9 earthquake Central Alaska
A magnitude 4.9 earthquake struck in Central Alaska on Sun, Nov 20, 1977, 8:53 AM GMT-10 (18:53 UTC), 79 km (49 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1977-11-20 18:53:57 UTC
- Depth
- 79.0 km (49.1 mi), intermediate-depth
- Epicenter
- 62.429° N, 150.661° 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
- 61
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.224 km S of Petersville, Alaska · 17832 days ago · 16 km deep · 18 km away
- 3.09 km SE of Petersville, Alaska · 17801 days ago · 39 km deep · 3 km away
- 3.051 km SE of Denali National Park, Alaska · 17780 days ago · 33 km deep · 93 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000rmp. Read Tue, Sep 22, 2026, 8:03 AM UTC.