M4.3 earthquake 208 km WNW of Hihifo, Tonga
A magnitude 4.3 earthquake struck 208 km WNW of Hihifo, Tonga on Sun, Sep 19, 2021, 1:10 PM GMT-12 (01:10 UTC), 331 km (206 mi) below the surface.
A larger quake followed: M5.5 164 km S of Mata-Utu, Wallis and Futuna. 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-09-20 01:10:10 UTC
- Depth
- 331.3 km (205.9 mi), deep
- Epicenter
- 15.109° S, 175.536° 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 11.5 km horizontally, 6.2 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 108°
- Stations used
- 40
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.6161 km W of Hihifo, Tonga · 1837 days ago · 321 km deep · 91 km away
- 4.7191 km WNW of Hihifo, Tonga · 1832 days ago · 10 km deep · 18 km away
- 4.0124 km W of Hihifo, Tonga · 1809 days ago · 258 km deep · 100 km away
- 4.4145 km S of Mata-Utu, Wallis and Futuna · 1783 days ago · 10 km deep · 89 km away
- 4.4198 km S of Mata-Utu, Wallis and Futuna · 1783 days ago · 10 km deep · 57 km away
- 4.3225 km WNW of Hihifo, Tonga · 1783 days ago · 10 km deep · 40 km away
- 5.5164 km S of Mata-Utu, Wallis and Futuna · 1783 days ago · 10 km deep · 72 km away · felt by 4
- 4.3198 km WNW of Hihifo, Tonga · 1783 days ago · 10 km deep · 42 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fcsa. Read Thu, Oct 1, 2026, 6:47 PM UTC.