M4.7 earthquake 65 km WSW of Unalaska, Alaska
A magnitude 4.7 earthquake struck 65 km WSW of Unalaska, Alaska on Fri, Sep 18, 1987, 3:12 AM AKDT (11:12 UTC), 33 km (21 mi) below the surface.
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
- 1987-09-18 11:12:46 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 53.549° N, 167.369° 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 1.7 and up: 1 in the 60 days after this one and 7 in the 30 days before it.
After
Before
- 4.535 km WSW of Unalaska, Alaska · 14273 days ago · 33 km deep · 30 km away
- 4.636 km WSW of Unalaska, Alaska · 14273 days ago · 33 km deep · 32 km away
- 4.636 km SW of Unalaska, Alaska · 14273 days ago · 33 km deep · 30 km away
- 4.941 km WSW of Unalaska, Alaska · 14273 days ago · 33 km deep · 27 km away
- 4.637 km WSW of Unalaska, Alaska · 14273 days ago · 33 km deep · 30 km away
- 5.045 km WSW of Dutch Harbor, Alaska · 14273 days ago · 33 km deep · 27 km away
- 4.772 km SW of Unalaska, Alaska · 14278 days ago · 33 km deep · 11 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00038gf. Read Tue, Sep 29, 2026, 1:22 AM UTC.