M6.1 earthquake 136 km ESE of Akutan, Alaska
A magnitude 6.1 earthquake struck 136 km ESE of Akutan, Alaska on Tue, Apr 2, 1946, 6:30 AM GMT-10 (16:30 UTC), 25 km (16 mi) below the surface.
A larger quake followed: M6.2 184 km SE of Akutan, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mw), strong
- Local time
- UTC
- 1946-04-02 16:30:29 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 53.528° N, 163.982° 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 3.1 and up: 2 in the 60 days after this one and 5 in the 30 days before it.
After
- 6.0155 km S of False Pass, Alaska · 29401 days ago · 25 km deep · 36 km away
- 6.2184 km SE of Akutan, Alaska · 29398 days ago · 25 km deep · 50 km away
Before
- 6.2172 km SSE of False Pass, Alaska · 29402 days ago · 25 km deep · 78 km away
- 6.2136 km S of False Pass, Alaska · 29402 days ago · 25 km deep · 19 km away
- 6.6146 km ESE of Akutan, Alaska · 29402 days ago · 25 km deep · 13 km away
- 6.2136 km SE of Akutan, Alaska · 29402 days ago · 25 km deep · 11 km away
- 8.6The 1946 Unimak Island, Alaska Earthquake · 29403 days ago · 15 km deep · 76 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem898330 (also filed as ushis1543). Read Thu, Oct 1, 2026, 12:18 AM UTC.