M5.7 earthquake 143 km SSW of Lotofag?, Samoa
A magnitude 5.7 earthquake struck 143 km SSW of Lotofag?, Samoa on Thu, Mar 22, 1984, 3:13 AM GMT-11 (14:13 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M6.0 94 km ENE 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
- 5.7 (mw), moderate
- Local time
- UTC
- 1984-03-22 14:13:16 UTC
- Depth
- 42.2 km (26.2 mi), shallow
- Epicenter
- 15.227° S, 172.193° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
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 1 in the 30 days before it.
After
- 6.094 km ENE of Hihifo, Tonga · 15494 days ago · 73 km deep · 97 km away
- 4.9136 km E of Hihifo, Tonga · 15489 days ago · 33 km deep · 80 km away
- 5.172 km S of Gataivai, Samoa · 15487 days ago · 33 km deep · 91 km away
Before
Earthquakes todaySamoa earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00022w0 (also filed as gcmtb032284a, gcmt19840322141316, iscgem557598). Read Tue, Sep 22, 2026, 8:53 AM UTC.