M4.4 earthquake 174 km ESE of Atka, Alaska
A magnitude 4.4 earthquake struck 174 km ESE of Atka, Alaska on Thu, Aug 28, 1986, 11:09 PM HADT (08:09 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.6 208 km SE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1986-08-29 08:09:01 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.700° N, 171.797° 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
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6208 km SE of Atka, Alaska · 14622 days ago · 33 km deep · 77 km away
- 4.5162 km WSW of Nikolski, Alaska · 14605 days ago · 33 km deep · 83 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002xn0. Read Tue, Sep 22, 2026, 10:30 PM UTC.