M4.7 earthquake 192 km WSW of Adak, Alaska
A magnitude 4.7 earthquake struck 192 km WSW of Adak, Alaska on Sat, Jun 6, 1987, 3:27 PM HADT (00:27 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 173 km WSW of Adak, AK. 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
- 1987-06-07 00:27:09 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.200° N, 179.190° 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: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6145 km WSW of Adak, Alaska · 14331 days ago · 33 km deep · 49 km away
- 4.7278 km WSW of Adak, Alaska · 14328 days ago · 33 km deep · 93 km away
- 4.8173 km WSW of Adak, AK · 14307 days ago · 33 km deep · 21 km away
- 4.6161 km WSW of Adak, Alaska · 14304 days ago · 33 km deep · 43 km away
- 4.8154 km WSW of Adak, Alaska · 14304 days ago · 33 km deep · 38 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00035kd. Read Tue, Sep 29, 2026, 6:22 AM UTC.