M4.1 earthquake 189 km WSW of Hihifo, Tonga
A magnitude 4.1 earthquake struck 189 km WSW of Hihifo, Tonga on Thu, Mar 8, 2018, 6:34 PM GMT-12 (06:34 UTC), 228 km (142 mi) below the surface.
A larger quake followed: M4.7 235 km W of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-03-09 06:34:44 UTC
- Depth
- 228.4 km (142.0 mi), intermediate-depth
- Epicenter
- 16.601° S, 175.437° 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 9.6 km horizontally, 16.0 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 151°
- Stations used
- 16
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
- 4.5184 km NW of Neiafu, Tonga · 3107 days ago · 228 km deep · 92 km away
- 4.7235 km W of Hihifo, Tonga · 3089 days ago · 345 km deep · 71 km away
- 4.2158 km W of Hihifo, Tonga · 3087 days ago · 293 km deep · 90 km away
- 4.4117 km WSW of Hihifo, Tonga · 3087 days ago · 275 km deep · 73 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000d5ah. Read Fri, Oct 2, 2026, 6:30 AM UTC.