M3.9 earthquake 50 km WSW of Atka, Alaska
A magnitude 3.9 earthquake struck 50 km WSW of Atka, Alaska on Mon, Jan 5, 1987, 3:16 PM HAST (01:16 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 69 km SSW 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
- 3.9 (ml), minor
- Local time
- UTC
- 1987-01-06 01:16:42 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.054° N, 174.894° 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: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.065 km ESE of Adak, Alaska · 14506 days ago · 33 km deep · 83 km away
- 4.7100 km ESE of Adak, Alaska · 14505 days ago · 33 km deep · 83 km away
- 5.269 km SSW of Atka, Alaska · 14497 days ago · 33 km deep · 62 km away
- 4.781 km WSW of Atka, Alaska · 14468 days ago · 33 km deep · 35 km away
- 5.094 km SSW of Atka, Alaska · 14463 days ago · 33 km deep · 69 km away
- 4.5106 km ESE of Adak, Alaska · 14461 days ago · 33 km deep · 70 km away
- 5.063 km NNW of Atka, Alaska · 14456 days ago · 162 km deep · 76 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00031eb. Read Wed, Sep 30, 2026, 4:19 AM UTC.