M4.8 earthquake 65 km WNW of Ninilchik, Alaska
A magnitude 4.8 earthquake struck 65 km WNW of Ninilchik, Alaska on Wed, Sep 21, 1983, 1:50 PM GMT-9 (22:50 UTC), 127 km (79 mi) below the surface.
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
- 1983-09-21 22:50:46 UTC
- Depth
- 127.1 km (79.0 mi), intermediate-depth
- Epicenter
- 60.332° N, 152.714° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.314 km NW of Anchor Point, Alaska · 15705 days ago · 33 km deep · 65 km away
- 4.621 km W of Anchor Point, Alaska · 15685 days ago · 81 km deep · 68 km away
- 3.082 km W of Nikiski, Alaska · 15677 days ago · 33 km deep · 54 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001yj1. Read Tue, Sep 22, 2026, 9:39 AM UTC.