M4.5 earthquake 102 km SSE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 102 km SSE of Hihifo, Tonga on Sat, Mar 31, 2018, 4:50 AM GMT+14 (14:50 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.7 109 km NNE 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-03-30 14:50:54 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.849° S, 173.541° 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 12.1 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 123°
- Stations used
- 19
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.580 km SSE of Hihifo, Tonga · 3108 days ago · 15 km deep · 26 km away
- 4.4135 km NNE of Neiafu, Tonga · 3103 days ago · 78 km deep · 70 km away
- 4.475 km ESE of Hihifo, Tonga · 3093 days ago · 35 km deep · 86 km away
- 4.7109 km NNE of Neiafu, Tonga · 3088 days ago · 86 km deep · 97 km away
- 4.544 km S of Hihifo, Tonga · 3073 days ago · 140 km deep · 64 km away
- 4.663 km ESE of Hihifo, Tonga · 3066 days ago · 10 km deep · 71 km away
- 4.4113 km N of Neiafu, Tonga · 3052 days ago · 167 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000dvjj. Read Fri, Oct 2, 2026, 11:33 AM UTC.