M4.3 earthquake 31 km ESE of Hihifo, Tonga
A magnitude 4.3 earthquake struck 31 km ESE of Hihifo, Tonga on Sat, Oct 16, 2021, 12:14 PM GMT+13 (23:14 UTC), 107 km (67 mi) below the surface.
A larger quake followed: M4.8 75 km E 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
- 4.3 (mb), light
- Local time
- UTC
- 2021-10-15 23:14:29 UTC
- Depth
- 107.1 km (66.5 mi), intermediate-depth
- Epicenter
- 16.081° S, 173.530° 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 7.6 km horizontally, 8.1 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 124°
- Stations used
- 31
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.6106 km ESE of Hihifo, Tonga · 1798 days ago · 10 km deep · 76 km away
- 4.313 km E of Hihifo, Tonga · 1793 days ago · 71 km deep · 19 km away
- 4.774 km SSE of Hihifo, Tonga · 1793 days ago · 10 km deep · 58 km away
- 4.294 km NE of Hihifo, Tonga · 1792 days ago · 10 km deep · 86 km away
- 4.636 km SSE of Hihifo, Tonga · 1789 days ago · 73 km deep · 20 km away
- 4.875 km E of Hihifo, Tonga · 1782 days ago · 10 km deep · 50 km away
- 4.385 km NNE of Hihifo, Tonga · 1774 days ago · 35 km deep · 91 km away
- 4.858 km N of Hihifo, Tonga · 1772 days ago · 10 km deep · 75 km away
- 4.4113 km ENE of Hihifo, Tonga · 1760 days ago · 10 km deep · 99 km away
Before
- 5.481 km NE of Hihifo, Tonga · 1820 days ago · 35 km deep · 78 km away · felt by 4
- 4.557 km SE of Hihifo, Tonga · 1829 days ago · 57 km deep · 33 km away
- 4.371 km NE of Hihifo, Tonga · 1830 days ago · 35 km deep · 64 km away
- 5.121 km NNE of Hihifo, Tonga · 1838 days ago · 67 km deep · 39 km away · felt by 3
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000fw61. Read Wed, Sep 30, 2026, 10:32 AM UTC.