M4.5 earthquake 60 km WSW of Unalaska, Alaska
A magnitude 4.5 earthquake struck 60 km WSW of Unalaska, Alaska on Thu, Aug 7, 1986, 8:31 PM AKDT (04:31 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 57 km SE of Unalaska, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1986-08-08 04:31:21 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 53.594° N, 167.320° 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: 3 in the 60 days after this one and 21 in the 30 days before it.
After
- 4.857 km SE of Unalaska, Alaska · 14640 days ago · 33 km deep · 97 km away
- 4.560 km SW of Unalaska, Alaska · 14629 days ago · 33 km deep · 18 km away
- 4.657 km SW of Unalaska, Alaska · 14613 days ago · 33 km deep · 5 km away
Before
- 4.6105 km S of Unalaska, Alaska · 14659 days ago · 33 km deep · 84 km away
- 4.662 km SW of Unalaska, Alaska · 14662 days ago · 33 km deep · 12 km away
- 4.763 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 19 km away
- 5.0112 km S of Unalaska, Alaska · 14667 days ago · 33 km deep · 95 km away
- 4.779 km SSW of Unalaska, Alaska · 14668 days ago · 33 km deep · 36 km away
- 4.3Fox Islands, Aleutian Islands, Alaska · 14670 days ago · 33 km deep · 40 km away
- 4.586 km ENE of Nikolski, Alaska · 14673 days ago · 33 km deep · 49 km away
- 4.350 km SSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 27 km away
- 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 21 km away
- 5.1Fox Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 7 km away
- 6.064 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 8 km away
- 4.948 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 12 km away
- 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 12 km away
- 5.064 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 6 km away
- 4.257 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 12 km away
- 4.862 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 11 km away
- 4.563 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 26 km away
- 6.051 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 10 km away
- 5.672 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 99 km away
- 4.458 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 2 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002wz1. Read Tue, Sep 22, 2026, 9:39 PM UTC.