M6.3 earthquake 108 km SSW of Akhiok, Alaska
A magnitude 6.3 earthquake struck 108 km SSW of Akhiok, Alaska on Mon, May 8, 1939, 9:28 PM GMT-10 (07:28 UTC), 25 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.3 (Mw, moment), strong
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1939-05-09 07:28:29 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 56.023° N, 154.761° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Maximum observed Modified Mercalli Intensity (MMI) I
From the USGS event page for iscgem901950. U.S. Geological Survey text and figures are in the public domain.
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
- ±0.22
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.3 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem901950 (also filed as ushis1249). Read Thu, Oct 1, 2026, 6:59 PM UTC.