M4.7 earthquake 109 km NNE of Neiafu, Tonga
A magnitude 4.7 earthquake struck 109 km NNE of Neiafu, Tonga on Wed, Apr 18, 2018, 1:09 PM GMT-12 (01:09 UTC), 86 km (53 mi) below the surface.
A larger quake followed: M5.5 131 km NE 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-04-19 01:09:18 UTC
- Depth
- 85.8 km (53.3 mi), intermediate-depth
- Epicenter
- 17.715° S, 173.650° 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 9.3 km horizontally, 8.6 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 77°
- Stations used
- 28
Nearby
Within 100 km, magnitude 1.7 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.457 km NE of Neiafu, Tonga · 3063 days ago · 119 km deep · 66 km away
- 5.5131 km NE of Neiafu, Tonga · 3054 days ago · 10 km deep · 66 km away
- 4.4113 km N of Neiafu, Tonga · 3051 days ago · 167 km deep · 35 km away
- 4.688 km NNW of Neiafu, Tonga · 3034 days ago · 60 km deep · 90 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000drz0. Read Fri, Oct 2, 2026, 5:32 AM UTC.