M4.4 earthquake 231 km SW of Vaini, Tonga
A magnitude 4.4 earthquake struck 231 km SW of Vaini, Tonga on Fri, Aug 10, 2018, 10:22 AM GMT+13 (21:22 UTC), 85 km (53 mi) below the surface.
A larger quake followed: M4.9 230 km SW of Haveluloto, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-09 21:22:05 UTC
- Depth
- 85.4 km (53.1 mi), intermediate-depth
- Epicenter
- 22.793° S, 176.614° 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 12.2 km horizontally, 7.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 93°
- Stations used
- 37
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.9230 km SW of Haveluloto, Tonga · 2954 days ago · 182 km deep · 44 km away
- 4.5232 km SW of Vaini, Tonga · 2942 days ago · 159 km deep · 36 km away
- 4.6152 km SW of Haveluloto, Tonga · 2930 days ago · 143 km deep · 97 km away
- 4.4225 km SW of ‘Ohonua, Tonga · 2920 days ago · 63 km deep · 52 km away
- 4.7214 km SW of ‘Ohonua, Tonga · 2916 days ago · 60 km deep · 53 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g91s. Read Thu, Oct 1, 2026, 1:48 PM UTC.