M4.1 earthquake 226 km W of Hihifo, Tonga
A magnitude 4.1 earthquake struck 226 km W of Hihifo, Tonga on Sun, Jul 4, 2021, 9:45 PM GMT-12 (09:45 UTC), 387 km (241 mi) below the surface.
A larger quake followed: M4.6 198 km WNW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-07-05 09:45:59 UTC
- Depth
- 387.1 km (240.5 mi), deep
- Epicenter
- 16.107° S, 175.911° 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 14.7 km horizontally, 9.7 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 118°
- Stations used
- 17
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.1177 km WSW of Hihifo, Tonga · 1911 days ago · 271 km deep · 82 km away
- 4.4163 km WSW of Hihifo, Tonga · 1906 days ago · 10 km deep · 73 km away
- 4.6198 km WNW of Hihifo, Tonga · 1906 days ago · 10 km deep · 91 km away
- 4.3150 km W of Hihifo, Tonga · 1905 days ago · 128 km deep · 76 km away
- 4.2257 km W of Hihifo, Tonga · 1872 days ago · 361 km deep · 32 km away
- 4.3271 km SE of Alo, Wallis and Futuna · 1871 days ago · 375 km deep · 49 km away
- 4.2230 km WSW of Hihifo, Tonga · 1867 days ago · 346 km deep · 33 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000etnc. Read Thu, Oct 1, 2026, 3:21 AM UTC.