M4.0 earthquake 201 km WSW of Hihifo, Tonga
A magnitude 4.0 earthquake struck 201 km WSW of Hihifo, Tonga on Thu, Oct 11, 2018, 9:27 PM GMT-12 (09:27 UTC), 332 km (206 mi) below the surface.
A larger quake followed: M4.5 217 km WNW 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-10-12 09:27:26 UTC
- Depth
- 331.9 km (206.2 mi), deep
- Epicenter
- 16.821° S, 175.452° 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 10.4 km horizontally, 15.8 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- From location
- Station coverage gap
- 160°
- Stations used
- 21
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 5 in the 30 days before it.
After
Before
- 4.2232 km WSW of Hihifo, Tonga · 2917 days ago · 296 km deep · 31 km away
- 4.3150 km WSW of Hihifo, Tonga · 2920 days ago · 332 km deep · 59 km away
- 4.3208 km W of Hihifo, Tonga · 2924 days ago · 339 km deep · 83 km away
- 4.2182 km NW of Neiafu, Tonga · 2925 days ago · 206 km deep · 74 km away
- 4.0179 km SW of Hihifo, Tonga · 2934 days ago · 267 km deep · 53 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hddk. Read Sat, Oct 3, 2026, 1:08 PM UTC.