M4.3 earthquake 139 km N of Neiafu, Tonga
A magnitude 4.3 earthquake struck 139 km N of Neiafu, Tonga on Tue, Dec 22, 2020, 5:23 AM GMT-12 (17:23 UTC), 549 km (341 mi) below the surface.
A larger quake followed: M4.9 148 km SSW 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
- 2020-12-22 17:23:57 UTC
- Depth
- 548.5 km (340.8 mi), deep
- Epicenter
- 17.391° S, 173.899° 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 19.2 km horizontally, 12.6 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- From location
- Station coverage gap
- 165°
- Stations used
- 15
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.6120 km SSW of Hihifo, Tonga · 2087 days ago · 148 km deep · 44 km away
- 4.8143 km SSW of Hihifo, Tonga · 2073 days ago · 92 km deep · 29 km away
- 4.9148 km SSW of Hihifo, Tonga · 2061 days ago · 157 km deep · 54 km away
Before
- 4.3135 km SSW of Hihifo, Tonga · 2115 days ago · 84 km deep · 47 km away
- 4.9162 km SSE of Hihifo, Tonga · 2116 days ago · 10 km deep · 97 km away
- 4.6125 km NNW of Neiafu, Tonga · 2129 days ago · 10 km deep · 79 km away
- 5.0142 km NNW of Neiafu, Tonga · 2130 days ago · 10 km deep · 81 km away
- 5.6136 km NW of Neiafu, Tonga · 2130 days ago · 10 km deep · 98 km away
- 4.380 km NE of Neiafu, Tonga · 2133 days ago · 35 km deep · 84 km away
- 4.693 km SSE of Hihifo, Tonga · 2133 days ago · 19 km deep · 79 km away
- 4.695 km SSE of Hihifo, Tonga · 2134 days ago · 10 km deep · 78 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000d5hv. Read Tue, Sep 29, 2026, 11:21 PM UTC.