M5.1 earthquake 150 km S of False Pass, Alaska
A magnitude 5.1 earthquake struck 150 km S of False Pass, Alaska on Wed, Aug 31, 1983, 12:20 PM GMT-10 (22:20 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1983-08-31 22:20:07 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 53.505° N, 163.605° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.196 km SSW of False Pass, Alaska · 15722 days ago · 49 km deep · 73 km away
- 4.9Unimak Island region, Alaska · 15704 days ago · 33 km deep · 22 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001y30 (also filed as iscgemsup571229). Read Tue, Sep 22, 2026, 5:00 AM UTC.