M6.0 earthquake 155 km S of False Pass, Alaska
A magnitude 6.0 earthquake struck 155 km S of False Pass, Alaska on Tue, Apr 2, 1946, 9:58 PM GMT-11 (08:58 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
- 6.0 (mw), strong
- Local time
- UTC
- 1946-04-03 08:58:36 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 53.456° N, 163.457° 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: 1 in the 60 days after this one and 6 in the 30 days before it.
After
Before
- 6.1136 km ESE of Akutan, Alaska · 29393 days ago · 25 km deep · 36 km away
- 6.2172 km SSE of False Pass, Alaska · 29394 days ago · 25 km deep · 42 km away
- 6.2136 km S of False Pass, Alaska · 29394 days ago · 25 km deep · 29 km away
- 6.6146 km ESE of Akutan, Alaska · 29394 days ago · 25 km deep · 24 km away
- 6.2136 km SE of Akutan, Alaska · 29394 days ago · 25 km deep · 40 km away
- 8.6The 1946 Unimak Island, Alaska Earthquake · 29395 days ago · 15 km deep · 42 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem898332 (also filed as ushis1544). Read Wed, Sep 23, 2026, 12:51 AM UTC.