M4.7 earthquake 274 km S of ‘Ohonua, Tonga
A magnitude 4.7 earthquake struck 274 km S of ‘Ohonua, Tonga on Sat, Dec 4, 2021, 7:46 AM GMT+13 (18:46 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.1 256 km S of ‘Ohonua, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 2021-12-03 18:46:39 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 23.799° S, 174.676° 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 5.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 123°
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 4 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.6282 km S of ‘Ohonua, Tonga · 1758 days ago · 10 km deep · 52 km away
- 5.1256 km S of ‘Ohonua, Tonga · 1755 days ago · 10 km deep · 63 km away
- 4.4264 km S of ‘Ohonua, Tonga · 1741 days ago · 10 km deep · 66 km away
- 4.9211 km S of ‘Ohonua, Tonga · 1739 days ago · 10 km deep · 88 km away
Before
- 4.9220 km S of ‘Ohonua, Tonga · 1762 days ago · 10 km deep · 90 km away
- 4.6229 km S of ‘Ohonua, Tonga · 1762 days ago · 10 km deep · 45 km away
- 5.5226 km S of ‘Ohonua, Tonga · 1762 days ago · 10 km deep · 57 km away
- 4.8246 km S of ‘Ohonua, Tonga · 1773 days ago · 10 km deep · 49 km away
- 4.9south of Tonga · 1782 days ago · 10 km deep · 68 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000gahy. Read Wed, Sep 30, 2026, 3:04 AM UTC.