M4.6 earthquake 140 km SW of Haveluloto, Tonga
A magnitude 4.6 earthquake struck 140 km SW of Haveluloto, Tonga on Wed, Oct 3, 2018, 6:51 PM GMT+13 (05:51 UTC), 188 km (117 mi) below the surface.
A larger quake followed: M4.8 192 km SW of ‘Ohonua, 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
- 2018-10-03 05:51:26 UTC
- Depth
- 187.8 km (116.7 mi), intermediate-depth
- Epicenter
- 21.945° S, 176.273° 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, 9.4 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 115°
- 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
- 4.4181 km SW of Vaini, Tonga · 2905 days ago · 155 km deep · 42 km away
- 4.383 km SW of Vaini, Tonga · 2902 days ago · 10 km deep · 62 km away
- 4.3199 km SW of Vaini, Tonga · 2901 days ago · 303 km deep · 60 km away
- 4.3181 km WSW of Haveluloto, Tonga · 2885 days ago · 309 km deep · 74 km away
- 4.8192 km SW of ‘Ohonua, Tonga · 2870 days ago · 40 km deep · 92 km away
- 4.8124 km SW of ‘Ohonua, Tonga · 2867 days ago · 96 km deep · 64 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000h64a. Read Sat, Oct 3, 2026, 9:52 PM UTC.