M4.3 earthquake 223 km SW of Vaini, Tonga
A magnitude 4.3 earthquake struck 223 km SW of Vaini, Tonga on Sat, Aug 14, 2021, 9:00 PM GMT+13 (08:00 UTC), 174 km (108 mi) below the surface.
A larger quake followed: M5.8 280 km SW of Vaini, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 2021-08-14 08:00:00 UTC
- Depth
- 173.8 km (108.0 mi), intermediate-depth
- Epicenter
- 22.540° S, 176.790° 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 14.9 km horizontally, 8.1 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 120°
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.8280 km SW of Vaini, Tonga · 1870 days ago · 157 km deep · 61 km away · felt by 2
- 4.7south of the Fiji Islands · 1868 days ago · 160 km deep · 99 km away
- 4.6south of the Fiji Islands · 1843 days ago · 349 km deep · 99 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000f3p1. Read Wed, Sep 30, 2026, 6:55 AM UTC.