M6.5 earthquake 144 km SW of Adak, Alaska
A magnitude 6.5 earthquake struck 144 km SW of Adak, Alaska on Fri, Apr 15, 1927, 9:15 PM GMT-11 (08:15 UTC), 20 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.5 (mw), strong
- Local time
- UTC
- 1927-04-16 08:15:01 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 51.086° N, 178.282° 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.
- Magnitude uncertainty
- ±0.34
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem909201 (also filed as ushis762). Read Tue, Sep 22, 2026, 7:43 AM UTC.