M4.2 earthquake 166 km W of Hihifo, Tonga
A magnitude 4.2 earthquake struck 166 km W of Hihifo, Tonga on Mon, Jul 10, 2017, 8:06 AM GMT-12 (20:06 UTC), 317 km (197 mi) below the surface.
A larger quake followed: M4.6 109 km WNW 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-07-10 20:06:58 UTC
- Depth
- 316.8 km (196.9 mi), deep
- Epicenter
- 15.868° S, 175.344° 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 15.4 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 61°
- Stations used
- 62
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6109 km WNW of Hihifo, Tonga · 3366 days ago · 10 km deep · 70 km away
- 4.0115 km WSW of Hihifo, Tonga · 3347 days ago · 288 km deep · 66 km away
- 4.2116 km NW of Hihifo, Tonga · 3316 days ago · 256 km deep · 92 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20009xxx. Read Sun, Oct 4, 2026, 9:42 AM UTC.