M4.3 earthquake 144 km S of False Pass, Alaska
A magnitude 4.3 earthquake struck 144 km S of False Pass, Alaska on Fri, May 11, 1973, 9:05 PM GMT-10 (07:05 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.5 147 km S of False Pass, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1973-05-12 07:05:16 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 53.569° N, 163.715° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.9147 km SE of Akutan, Alaska · 19491 days ago · 33 km deep · 23 km away
- 4.5147 km S of False Pass, Alaska · 19491 days ago · 30 km deep · 4 km away
- 6.096 km SSW of False Pass, Alaska · 19474 days ago · 30 km deep · 49 km away
- 4.899 km SSW of False Pass, Alaska · 19467 days ago · 17 km deep · 56 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00001sw. Read Tue, Sep 22, 2026, 11:33 AM UTC.