M4.2 earthquake 137 km WNW of Neiafu, Tonga
A magnitude 4.2 earthquake struck 137 km WNW of Neiafu, Tonga on Sun, Apr 30, 2023, 5:31 PM GMT+13 (04:31 UTC), 219 km (136 mi) below the surface.
A larger quake followed: M6.0 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
- 2023-04-30 04:31:55 UTC
- Depth
- 219.0 km (136.1 mi), intermediate-depth
- Epicenter
- 18.367° S, 175.255° 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 11.8 km horizontally, 7.7 km in depth
- Magnitude uncertainty
- ±0.19
- Depth from
- From location
- Station coverage gap
- 105°
- Stations used
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.166 km NW of Neiafu, Tonga · 1245 days ago · 134 km deep · 92 km away
- 6.0Tonga · 1225 days ago · 222 km deep · 15 km away · felt by 1
- 4.690 km NW of Neiafu, Tonga · 1215 days ago · 123 km deep · 91 km away
- 4.165 km W of Neiafu, Tonga · 1201 days ago · 144 km deep · 73 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000k9q7. Read Sat, Oct 3, 2026, 6:50 AM UTC.