M6.2 earthquake 172 km SSE of False Pass, Alaska
A magnitude 6.2 earthquake struck 172 km SSE of False Pass, Alaska on Mon, Apr 1, 1946, 6:57 PM GMT-11 (05:57 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
- 6.2 (mw), strong
- Local time
- UTC
- 1946-04-02 05:57:13 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 53.340° N, 162.850° 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
- ±0.45
- 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: 3 in the 60 days after this one and 4 in the 30 days before it.
After
- 6.1136 km ESE of Akutan, Alaska · 29394 days ago · 25 km deep · 78 km away
- 6.0155 km S of False Pass, Alaska · 29393 days ago · 25 km deep · 42 km away
- 6.2184 km SE of Akutan, Alaska · 29390 days ago · 25 km deep · 44 km away
Before
- 6.2136 km S of False Pass, Alaska · 29394 days ago · 25 km deep · 69 km away
- 6.6146 km ESE of Akutan, Alaska · 29395 days ago · 25 km deep · 66 km away
- 6.2136 km SE of Akutan, Alaska · 29395 days ago · 25 km deep · 81 km away
- 8.6The 1946 Unimak Island, Alaska Earthquake · 29395 days ago · 15 km deep · 17 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem898327 (also filed as ushis1541). Read Wed, Sep 23, 2026, 2:04 PM UTC.