M4.5 earthquake 102 km NNE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 102 km NNE of Hihifo, Tonga on Wed, Dec 1, 2021, 7:45 PM GMT+13 (06:45 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.2 13 km NNE 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
- 4.5 (mb), light
- Local time
- UTC
- 2021-12-01 06:45:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.101° S, 173.434° 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 9.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- Operator assigned
- Station coverage gap
- 124°
- Stations used
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 7 in the 30 days before it.
After
- 5.1121 km NE of Hihifo, Tonga · 1760 days ago · 10 km deep · 35 km away · felt by 1
- 4.4113 km ENE of Hihifo, Tonga · 1760 days ago · 10 km deep · 70 km away
- 4.5101 km NNW of Hihifo, Tonga · 1744 days ago · 10 km deep · 85 km away
- 4.4107 km N of Hihifo, Tonga · 1733 days ago · 10 km deep · 38 km away
- 5.079 km ENE of Hihifo, Tonga · 1723 days ago · 35 km deep · 74 km away
- 5.213 km NNE of Hihifo, Tonga · 1709 days ago · 106 km deep · 89 km away · felt by 2
- 4.575 km N of Hihifo, Tonga · 1708 days ago · 35 km deep · 45 km away
Before
- 5.2114 km NNE of Hihifo, Tonga · 1769 days ago · 10 km deep · 16 km away · felt by 2
- 5.4130 km NE of Hihifo, Tonga · 1769 days ago · 10 km deep · 41 km away · felt by 4
- 4.858 km N of Hihifo, Tonga · 1772 days ago · 10 km deep · 48 km away
- 4.385 km NNE of Hihifo, Tonga · 1774 days ago · 35 km deep · 19 km away
- 4.2115 km NNE of Hihifo, Tonga · 1781 days ago · 10 km deep · 19 km away
- 4.875 km E of Hihifo, Tonga · 1782 days ago · 10 km deep · 99 km away
- 4.294 km NE of Hihifo, Tonga · 1792 days ago · 10 km deep · 50 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ga0k. Read Wed, Sep 30, 2026, 8:10 AM UTC.