M4.7 earthquake 187 km ENE of Neiafu, Tonga
A magnitude 4.7 earthquake struck 187 km ENE of Neiafu, Tonga on Sun, Dec 10, 2017, 1:45 PM GMT-11 (00:45 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 Tonga region. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-12-11 00:45:19 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.826° S, 172.438° 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 3.6 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 97°
- Stations used
- 45
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.4144 km ENE of Neiafu, Tonga · 3217 days ago · 10 km deep · 67 km away
- 5.0Tonga region · 3170 days ago · 10 km deep · 25 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000c5kx. Read Sat, Oct 3, 2026, 2:01 PM UTC.