M4.3 earthquake 56 km W of Nanwalek, Alaska
A magnitude 4.3 earthquake struck 56 km W of Nanwalek, Alaska on Thu, Apr 30, 1981, 7:44 AM GMT-9 (16:44 UTC), 129 km (80 mi) below the surface.
A larger quake followed: M4.7 72 km SE of Pedro Bay, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1981-04-30 16:44:09 UTC
- Depth
- 128.8 km (80.0 mi), intermediate-depth
- Epicenter
- 59.420° N, 152.906° 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.866 km W of Nanwalek, Alaska · 16584 days ago · 115 km deep · 10 km away
- 4.044 km ENE of Pedro Bay, Alaska · 16584 days ago · 142 km deep · 70 km away
- 4.661 km W of Anchor Point, Alaska · 16566 days ago · 117 km deep · 39 km away
- 4.165 km WNW of Ninilchik, Alaska · 16559 days ago · 115 km deep · 84 km away
- 4.772 km SE of Pedro Bay, Alaska · 16531 days ago · 111 km deep · 23 km away
- 3.49 km SSW of Happy Valley, Alaska · 16529 days ago · 33 km deep · 80 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001dfg. Read Mon, Sep 28, 2026, 6:52 PM UTC.