M5.0 earthquake 125 km SSW of Lotofag?, Samoa
A magnitude 5.0 earthquake struck 125 km SSW of Lotofag?, Samoa on Sun, Mar 13, 1977, 6:33 AM GMT-11 (17:33 UTC), 13 km (8 mi) below the surface.
A larger quake followed: M5.3 106 km NE of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1977-03-13 17:33:48 UTC
- Depth
- 13.0 km (8.1 mi), shallow
- Epicenter
- 15.016° S, 172.326° W
- Region
- Samoa
- 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.
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todaySamoa earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000mwg. Read Tue, Sep 22, 2026, 8:49 PM UTC.