M4.1 earthquake 68 km W of Nanwalek, Alaska
A magnitude 4.1 earthquake struck 68 km W of Nanwalek, Alaska on Wed, Feb 11, 1981, 6:02 AM GMT-10 (16:02 UTC), 109 km (67 mi) below the surface.
A larger quake followed: M5.0 52 km S of Kokhanok, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 1981-02-11 16:02:26 UTC
- Depth
- 108.5 km (67.4 mi), intermediate-depth
- Epicenter
- 59.316° N, 153.117° 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: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.939 km WNW of Happy Valley, Alaska · 16636 days ago · 104 km deep · 91 km away
- 5.052 km S of Kokhanok, Alaska · 16620 days ago · 136 km deep · 98 km away
- 4.179 km NNW of Aleneva, Alaska · 16611 days ago · 69 km deep · 70 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001c4h. Read Tue, Sep 22, 2026, 8:20 AM UTC.