M4.6 earthquake 94 km WNW of Neiafu, Tonga
A magnitude 4.6 earthquake struck 94 km WNW of Neiafu, Tonga on Fri, Aug 3, 2018, 7:33 AM GMT+13 (18:33 UTC), 83 km (52 mi) below the surface.
A larger quake followed: M4.9 102 km W 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
- 2018-08-02 18:33:51 UTC
- Depth
- 83.5 km (51.9 mi), intermediate-depth
- Epicenter
- 18.442° S, 174.852° 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 11.1 km horizontally, 7.3 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 77°
- Stations used
- 57
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.682 km NW of Neiafu, Tonga · 2978 days ago · 166 km deep · 43 km away
- 4.5161 km W of Neiafu, Tonga · 2977 days ago · 273 km deep · 80 km away
- 4.9102 km W of Neiafu, Tonga · 2975 days ago · 134 km deep · 36 km away · felt by 1
- 4.669 km WSW of Neiafu, Tonga · 2958 days ago · 109 km deep · 44 km away
- 4.1154 km W of Neiafu, Tonga · 2938 days ago · 149 km deep · 70 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g24x. Read Thu, Oct 1, 2026, 10:40 PM UTC.