M4.5 earthquake 105 km WSW of Nikolski, Alaska
A magnitude 4.5 earthquake struck 105 km WSW of Nikolski, Alaska on Sat, Mar 12, 1983, 2:52 PM GMT-11 (01:52 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.9 124 km SW of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1983-03-13 01:52:42 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.491° N, 170.244° 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 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.9124 km SW of Nikolski, Alaska · 15897 days ago · 33 km deep · 43 km away
- 4.5100 km WSW of Nikolski, Alaska · 15897 days ago · 33 km deep · 8 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001tkx. Read Tue, Sep 22, 2026, 6:31 AM UTC.