M4.9 earthquake 220 km S of ‘Ohonua, Tonga
A magnitude 4.9 earthquake struck 220 km S of ‘Ohonua, Tonga on Fri, Dec 3, 2021, 10:20 PM GMT+13 (09:20 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
- 4.9 (mb), light
- Local time
- UTC
- 2021-12-03 09:20:56 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 23.283° S, 175.362° 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 9.7 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 82°
- Stations used
- 46
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.4274 km SSW of ‘Ohonua, Tonga · 1761 days ago · 47 km deep · 76 km away
- 4.7274 km S of ‘Ohonua, Tonga · 1761 days ago · 10 km deep · 90 km away
- 4.3204 km SSW of ‘Ohonua, Tonga · 1760 days ago · 68 km deep · 74 km away
- 4.6282 km S of ‘Ohonua, Tonga · 1758 days ago · 10 km deep · 69 km away
- 5.1256 km S of ‘Ohonua, Tonga · 1755 days ago · 10 km deep · 40 km away
- 4.6260 km SSW of ‘Ohonua, Tonga · 1742 days ago · 35 km deep · 48 km away
- 4.4264 km S of ‘Ohonua, Tonga · 1741 days ago · 10 km deep · 47 km away
- 4.9211 km S of ‘Ohonua, Tonga · 1739 days ago · 10 km deep · 13 km away
- 5.0150 km S of ‘Ohonua, Tonga · 1723 days ago · 10 km deep · 80 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000g8nw. Read Wed, Sep 30, 2026, 3:53 AM UTC.