M4.7 earthquake 201 km WSW of Adak, Alaska
A magnitude 4.7 earthquake struck 201 km WSW of Adak, Alaska on Mon, May 19, 1986, 11:21 AM HADT (20:21 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 226 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-05-19 20:21:52 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.230° N, 179.348° 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 2 in the 30 days before it.
After
- 5.2212 km W of Adak, Alaska · 14747 days ago · 33 km deep · 68 km away
- 4.2203 km W of Adak, Alaska · 14746 days ago · 33 km deep · 55 km away
- 5.0245 km WSW of Adak, Alaska · 14728 days ago · 33 km deep · 46 km away
- 4.9183 km SW of Adak, Alaska · 14715 days ago · 33 km deep · 52 km away
- 5.7226 km WSW of Adak, Alaska · 14700 days ago · 33 km deep · 28 km away
- 4.2239 km WSW of Adak, Alaska · 14700 days ago · 33 km deep · 55 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002u6u. Read Sat, Oct 3, 2026, 1:38 PM UTC.