M4.6 earthquake 81 km SSE of Adak, Alaska
A magnitude 4.6 earthquake struck 81 km SSE of Adak, Alaska on Thu, Jan 15, 1987, 2:05 PM HAST (00:05 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 44 km SSW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-01-16 00:05:26 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.230° N, 176.069° 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 1.6 and up: 6 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.781 km WSW of Atka, Alaska · 14469 days ago · 33 km deep · 88 km away
- 5.144 km SSW of Adak, Alaska · 14464 days ago · 33 km deep · 57 km away
- 5.094 km SSW of Atka, Alaska · 14464 days ago · 33 km deep · 91 km away
- 4.5106 km ESE of Adak, Alaska · 14462 days ago · 33 km deep · 63 km away
- 5.091 km SW of Atka, Alaska · 14450 days ago · 33 km deep · 76 km away
- 4.846 km SSE of Adak, Alaska · 14447 days ago · 33 km deep · 35 km away
Before
- 4.7100 km ESE of Adak, Alaska · 14507 days ago · 33 km deep · 48 km away
- 5.065 km ESE of Adak, Alaska · 14507 days ago · 33 km deep · 43 km away
- 4.969 km SW of Adak, Alaska · 14515 days ago · 33 km deep · 87 km away
- 4.687 km SE of Adak, Alaska · 14520 days ago · 33 km deep · 16 km away
- 5.146 km SSW of Adak, Alaska · 14531 days ago · 33 km deep · 71 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00031q2. Read Thu, Oct 1, 2026, 11:17 AM UTC.