M4.2 earthquake 93 km SE of Neiafu, Tonga
A magnitude 4.2 earthquake struck 93 km SE of Neiafu, Tonga on Sun, Sep 12, 2021, 9:14 PM GMT+13 (08:14 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.4 85 km SE 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-09-12 08:14:35 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 19.272° S, 173.379° 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 15.1 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- Operator assigned
- Station coverage gap
- 164°
- Stations used
- 18
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.6153 km ESE of Neiafu, Tonga · 1828 days ago · 10 km deep · 88 km away
- 4.799 km ENE of Pangai, Tonga · 1819 days ago · 10 km deep · 21 km away
- 4.6127 km E of Neiafu, Tonga · 1795 days ago · 10 km deep · 77 km away
- 5.485 km SE of Neiafu, Tonga · 1789 days ago · 10 km deep · 14 km away
- 4.887 km E of Pangai, Tonga · 1785 days ago · 10 km deep · 57 km away · felt by 1
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fc3a. Read Thu, Oct 1, 2026, 3:23 AM UTC.