M5.1 earthquake 126 km NW of Neiafu, Tonga
A magnitude 5.1 earthquake struck 126 km NW of Neiafu, Tonga on Sat, Mar 19, 1977, 10:22 PM GMT+13 (09:22 UTC), 176 km (109 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
- 1977-03-19 09:22:42 UTC
- Depth
- 176.0 km (109.4 mi), intermediate-depth
- Epicenter
- 17.722° S, 174.682° W
- Region
- Tonga
- 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
- Stations used
- 24
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
- 4.8174 km WNW of Neiafu, Tonga · 18082 days ago · 294 km deep · 92 km away
- 4.941 km NNW of Neiafu, Tonga · 18060 days ago · 50 km deep · 90 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000mzn. Read Tue, Sep 22, 2026, 12:16 PM UTC.