M6.6 earthquake 146 km ESE of Akutan, Alaska
A magnitude 6.6 earthquake struck 146 km ESE of Akutan, Alaska on Mon, Apr 1, 1946, 8:57 AM GMT-10 (18:57 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
- 6.6 (mw), strong
- Local time
- UTC
- 1946-04-01 18:57:40 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 53.540° N, 163.784° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 6.2136 km S of False Pass, Alaska · 29394 days ago · 25 km deep · 12 km away
- 6.2172 km SSE of False Pass, Alaska · 29393 days ago · 25 km deep · 66 km away
- 6.1136 km ESE of Akutan, Alaska · 29393 days ago · 25 km deep · 13 km away
- 6.0155 km S of False Pass, Alaska · 29392 days ago · 25 km deep · 24 km away
- 6.2184 km SE of Akutan, Alaska · 29389 days ago · 25 km deep · 44 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem898323 (also filed as ushis1538). Read Tue, Sep 22, 2026, 4:03 PM UTC.