M4.7 earthquake 92 km S of Adak, Alaska
A magnitude 4.7 earthquake struck 92 km S of Adak, Alaska on Sun, Nov 9, 1986, 6:13 PM HAST (04:13 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 90 km ESE 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
- 4.7 (mb), light
- Local time
- UTC
- 1986-11-10 04:13:55 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.056° N, 176.395° 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 1.7 and up: 6 in the 60 days after this one and 7 in the 30 days before it.
After
- 4.5103 km SSE of Adak, Alaska · 14559 days ago · 33 km deep · 28 km away
- 4.670 km S of Adak, Alaska · 14546 days ago · 33 km deep · 22 km away
- 5.290 km ESE of Adak, Alaska · 14533 days ago · 33 km deep · 95 km away
- 5.146 km SSW of Adak, Alaska · 14530 days ago · 33 km deep · 65 km away
- 4.687 km SE of Adak, Alaska · 14519 days ago · 33 km deep · 44 km away
- 4.969 km SW of Adak, Alaska · 14514 days ago · 33 km deep · 73 km away
Before
- 4.864 km SSE of Adak, Alaska · 14572 days ago · 33 km deep · 28 km away
- 5.945 km S of Adak, Alaska · 14572 days ago · 33 km deep · 50 km away
- 4.7174 km SSE of Adak, Alaska · 14573 days ago · 33 km deep · 97 km away
- 4.868 km SE of Adak, Alaska · 14579 days ago · 33 km deep · 65 km away
- 4.7102 km SSE of Adak, Alaska · 14585 days ago · 33 km deep · 34 km away
- 5.254 km SSW of Adak, Alaska · 14586 days ago · 33 km deep · 50 km away
- 4.4136 km SE of Adak, Alaska · 14592 days ago · 33 km deep · 80 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002zva. Read Wed, Sep 30, 2026, 4:55 AM UTC.