M4.6 earthquake 143 km W of Neiafu, Tonga
A magnitude 4.6 earthquake struck 143 km W of Neiafu, Tonga on Mon, Apr 2, 2018, 6:08 AM GMT+13 (17:08 UTC), 195 km (121 mi) below the surface.
A larger quake followed: M4.9 67 km WNW 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-04-01 17:08:22 UTC
- Depth
- 195.0 km (121.1 mi), intermediate-depth
- Epicenter
- 18.881° S, 175.319° 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 5.3 km horizontally, 8.6 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 78°
- Stations used
- 42
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.7133 km WNW of Neiafu, Tonga · 3094 days ago · 236 km deep · 81 km away
- 4.3150 km NW of Pangai, Tonga · 3093 days ago · 244 km deep · 11 km away
- 4.2139 km WNW of Pangai, Tonga · 3086 days ago · 263 km deep · 44 km away
- 4.4144 km WNW of Neiafu, Tonga · 3079 days ago · 256 km deep · 76 km away
- 4.6131 km W of Neiafu, Tonga · 3053 days ago · 212 km deep · 31 km away
- 4.967 km WNW of Neiafu, Tonga · 3048 days ago · 94 km deep · 85 km away · felt by 1
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000dwz7. Read Thu, Oct 1, 2026, 6:28 PM UTC.