M4.5 earthquake 101 km NNW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 101 km NNW of Hihifo, Tonga on Wed, Dec 22, 2021, 3:01 AM GMT+13 (14:01 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
- 2021-12-21 14:01:49 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.140° S, 174.223° 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 14.1 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- Operator assigned
- Station coverage gap
- 92°
- Stations used
- 10
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 4 in the 30 days before it.
After
- 4.4107 km N of Hihifo, Tonga · 1733 days ago · 10 km deep · 52 km away
- 5.213 km NNE of Hihifo, Tonga · 1709 days ago · 106 km deep · 94 km away · felt by 2
- 4.575 km N of Hihifo, Tonga · 1708 days ago · 35 km deep · 46 km away
- 4.386 km NNE of Hihifo, Tonga · 1695 days ago · 7 km deep · 93 km away
- 4.795 km NNE of Hihifo, Tonga · 1694 days ago · 10 km deep · 94 km away
- 4.6114 km NNE of Hihifo, Tonga · 1693 days ago · 10 km deep · 94 km away
- 4.542 km N of Hihifo, Tonga · 1686 days ago · 29 km deep · 65 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000g8zb. Read Wed, Sep 30, 2026, 10:34 AM UTC.