M4.0 earthquake 80 km NW of Ninilchik, Alaska
A magnitude 4.0 earthquake struck 80 km NW of Ninilchik, Alaska on Fri, Apr 24, 1981, 11:29 AM GMT-10 (21:29 UTC), 135 km (84 mi) below the surface.
A larger quake followed: M4.6 61 km W of Anchor Point, 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
- 1981-04-24 21:29:43 UTC
- Depth
- 134.6 km (83.6 mi), intermediate-depth
- Epicenter
- 60.518° N, 152.773° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.044 km ENE of Pedro Bay, Alaska · 16577 days ago · 142 km deep · 69 km away
- 4.661 km W of Anchor Point, Alaska · 16559 days ago · 117 km deep · 83 km away
- 4.165 km WNW of Ninilchik, Alaska · 16552 days ago · 115 km deep · 38 km away
- 4.322 km WNW of Nikiski, Alaska · 16550 days ago · 82 km deep · 69 km away
- 4.142 km W of Salamatof, Alaska · 16539 days ago · 117 km deep · 41 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001db3. Read Tue, Sep 22, 2026, 2:03 AM UTC.