M6.3 earthquake 100 km ESE of Adak, Alaska
A magnitude 6.3 earthquake struck 100 km ESE of Adak, Alaska on Thu, Aug 14, 1958, 3:55 AM GMT-11 (14:55 UTC), 35 km (22 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), strong
- Local time
- UTC
- 1958-08-14 14:55:16 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.434° N, 175.363° 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
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 6.166 km SE of Adak, Alaska · 24874 days ago · 25 km deep · 45 km away
- 5.883 km SSE of Adak, Alaska · 24873 days ago · 15 km deep · 62 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem884933 (also filed as ushis2328). Read Tue, Sep 22, 2026, 3:59 PM UTC.