M4.7 earthquake 120 km W of Neiafu, Tonga
A magnitude 4.7 earthquake struck 120 km W of Neiafu, Tonga on Sat, Oct 7, 2017, 5:04 AM GMT+13 (16:04 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M6.1 156 km NW of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-10-06 16:04:14 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 18.754° S, 175.126° 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 7.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 116°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6170 km WNW of Pangai, Tonga · 3280 days ago · 188 km deep · 69 km away
- 6.1156 km NW of Pangai, Tonga · 3280 days ago · 10 km deep · 53 km away · felt by 1
- 4.3132 km WNW of Neiafu, Tonga · 3266 days ago · 207 km deep · 75 km away
- 4.7123 km WNW of Neiafu, Tonga · 3247 days ago · 199 km deep · 59 km away
- 4.7140 km W of Neiafu, Tonga · 3243 days ago · 242 km deep · 37 km away
- 4.1122 km NW of Neiafu, Tonga · 3241 days ago · 212 km deep · 87 km away
- 4.491 km WNW of Pangai, Tonga · 3235 days ago · 196 km deep · 71 km away
- 4.1146 km WNW of Neiafu, Tonga · 3234 days ago · 216 km deep · 77 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000arjh. Read Thu, Oct 1, 2026, 4:23 AM UTC.