M4.2 earthquake 85 km NNW of Neiafu, Tonga
A magnitude 4.2 earthquake struck 85 km NNW of Neiafu, Tonga on Tue, Nov 9, 2021, 6:55 AM GMT+13 (17:55 UTC), 67 km (42 mi) below the surface.
A larger quake followed: M4.6 138 km NW of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 2021-11-08 17:55:37 UTC
- Depth
- 67.2 km (41.7 mi), shallow
- Epicenter
- 17.952° S, 174.322° 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 15.0 km horizontally, 8.2 km in depth
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
- Station coverage gap
- 148°
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.6138 km NW of Neiafu, Tonga · 1780 days ago · 227 km deep · 62 km away
- 4.4137 km N of Neiafu, Tonga · 1780 days ago · 76 km deep · 72 km away
- 4.5103 km NNW of Neiafu, Tonga · 1760 days ago · 80 km deep · 19 km away
- 4.379 km NNE of Neiafu, Tonga · 1758 days ago · 35 km deep · 78 km away
- 4.558 km N of Neiafu, Tonga · 1743 days ago · 10 km deep · 37 km away
- 4.396 km NW of Neiafu, Tonga · 1736 days ago · 165 km deep · 45 km away
- 4.668 km NNW of Neiafu, Tonga · 1732 days ago · 85 km deep · 17 km away
- 4.270 km NNW of Neiafu, Tonga · 1729 days ago · 138 km deep · 17 km away
Before
- 4.533 km NE of Neiafu, Tonga · 1791 days ago · 44 km deep · 81 km away
- 4.2144 km NW of Neiafu, Tonga · 1792 days ago · 262 km deep · 64 km away
- 4.6125 km NNW of Neiafu, Tonga · 1794 days ago · 176 km deep · 41 km away
- 4.1168 km NNW of Neiafu, Tonga · 1804 days ago · 308 km deep · 85 km away
- 4.488 km NW of Neiafu, Tonga · 1809 days ago · 131 km deep · 31 km away
- 4.5162 km SW of Hihifo, Tonga · 1815 days ago · 197 km deep · 98 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000ftkb. Read Wed, Sep 30, 2026, 6:15 AM UTC.