M4.6 earthquake 171 km W of Neiafu, Tonga
A magnitude 4.6 earthquake struck 171 km W of Neiafu, Tonga on Wed, Mar 29, 2023, 8:27 PM GMT+13 (07:27 UTC), 243 km (151 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2023-03-29 07:27:03 UTC
- Depth
- 242.7 km (150.8 mi), intermediate-depth
- Epicenter
- 18.477° S, 175.598° 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 11.3 km horizontally, 6.0 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 40°
- Stations used
- 59
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.277 km WNW of Neiafu, Tonga · 1262 days ago · 117 km deep · 95 km away · felt by 1
- 4.4158 km W of Neiafu, Tonga · 1261 days ago · 222 km deep · 26 km away
- 4.4132 km W of Neiafu, Tonga · 1261 days ago · 224 km deep · 40 km away
- 4.2137 km WNW of Neiafu, Tonga · 1253 days ago · 219 km deep · 38 km away
- 6.0Tonga · 1226 days ago · 222 km deep · 44 km away · felt by 1
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000k0i4. Read Sun, Oct 4, 2026, 6:20 AM UTC.