M4.5 earthquake 298 km WSW of Adak, Alaska
A magnitude 4.5 earthquake struck 298 km WSW of Adak, Alaska on Wed, May 6, 1987, 5:03 PM GMT+12 (05:03 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 249 km WSW 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
- 4.5 (mb), light
- Local time
- UTC
- 1987-05-06 05:03:39 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 50.676° N, 179.540° E
- 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 1.5 and up: 10 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.9245 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 67 km away
- 5.1249 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 51 km away
- 4.4244 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 63 km away
- 4.8246 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 52 km away
- 4.8246 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 56 km away
- 4.9243 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 56 km away
- 4.8236 km WSW of Adak, Alaska · 14391 days ago · 33 km deep · 83 km away
- 5.0226 km WSW of Adak, Alaska · 14387 days ago · 33 km deep · 92 km away
- 4.8289 km WSW of Adak, Alaska · 14362 days ago · 33 km deep · 55 km away
- 4.8248 km WSW of Adak, Alaska · 14360 days ago · 33 km deep · 50 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00034s2. Read Tue, Sep 29, 2026, 3:08 PM UTC.