M4.0 earthquake 105 km NW of Yakutat, Alaska
A magnitude 4.0 earthquake struck 105 km NW of Yakutat, Alaska on Fri, Sep 11, 1981, 12:39 AM GMT-8 (08:39 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M4.5 101 km NW of Yakutat, 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
- 1981-09-11 08:39:50 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 60.274° N, 140.935° 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
- OPERATOR_ASSIGNED
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
- 3.853 km N of Yakutat, Alaska · 16449 days ago · 23 km deep · 78 km away
- 4.197 km NW of Yakutat, Alaska · 16429 days ago · 15 km deep · 19 km away
- 4.5101 km NW of Yakutat, Alaska · 16419 days ago · 15 km deep · 5 km away
- 3.7101 km NW of Yakutat, Alaska · 16419 days ago · 15 km deep · 8 km away
- 4.4105 km NW of Yakutat, Alaska · 16419 days ago · 15 km deep · 3 km away
- 3.8100 km NW of Yakutat, Alaska · 16419 days ago · 15 km deep · 7 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ft4. Read Tue, Sep 29, 2026, 8:46 PM UTC.