M4.3 earthquake 137 km SSW of Hihifo, Tonga
A magnitude 4.3 earthquake struck 137 km SSW of Hihifo, Tonga on Sat, May 12, 2018, 3:56 PM GMT-12 (03:56 UTC), 134 km (83 mi) below the surface.
A larger quake followed: M4.6 138 km NNW of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-05-13 03:56:05 UTC
- Depth
- 134.2 km (83.4 mi), intermediate-depth
- Epicenter
- 17.001° S, 174.494° 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.
- Location uncertainty
- About 12.5 km horizontally, 8.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 116°
- Stations used
- 37
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.4113 km N of Neiafu, Tonga · 3051 days ago · 167 km deep · 89 km away
- 4.6138 km NNW of Neiafu, Tonga · 3020 days ago · 83 km deep · 54 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000e78v. Read Fri, Oct 2, 2026, 3:02 AM UTC.