M4.2 earthquake 100 km NNE of Neiafu, Tonga
A magnitude 4.2 earthquake struck 100 km NNE of Neiafu, Tonga on Sun, Apr 9, 2023, 2:58 PM GMT-12 (02:58 UTC), 41 km (25 mi) below the surface.
A larger quake followed: M4.7 99 km NE 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
- 2023-04-10 02:58:24 UTC
- Depth
- 40.9 km (25.4 mi), shallow
- Epicenter
- 17.845° S, 173.552° 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 6.0 km horizontally, 12.1 km in depth
- Magnitude uncertainty
- ±0.24
- Depth from
- From location
- Station coverage gap
- 139°
- Stations used
- 13
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.799 km NE of Neiafu, Tonga · 1267 days ago · 35 km deep · 35 km away
- 4.166 km NW of Neiafu, Tonga · 1244 days ago · 134 km deep · 98 km away
- 4.2151 km SSE of Hihifo, Tonga · 1234 days ago · 35 km deep · 73 km away
- 4.1127 km N of Neiafu, Tonga · 1216 days ago · 120 km deep · 74 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000k52n. Read Fri, Oct 2, 2026, 7:12 PM UTC.