M4.3 earthquake 127 km N of Neiafu, Tonga
A magnitude 4.3 earthquake struck 127 km N of Neiafu, Tonga on Sat, Oct 7, 2017, 2:42 PM GMT-12 (02:42 UTC), 145 km (90 mi) below the surface.
A larger quake followed: M5.3 146 km NNW 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
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-10-08 02:42:47 UTC
- Depth
- 145.2 km (90.2 mi), intermediate-depth
- Epicenter
- 17.523° S, 174.211° 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 12.2 km horizontally, 8.2 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 88°
- Stations used
- 23
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.544 km NNE of Neiafu, Tonga · 3256 days ago · 47 km deep · 96 km away
- 5.3146 km NNW of Neiafu, Tonga · 3243 days ago · 156 km deep · 47 km away
- 4.1122 km NW of Neiafu, Tonga · 3242 days ago · 212 km deep · 92 km away
- 4.5117 km SSE of Hihifo, Tonga · 3239 days ago · 33 km deep · 96 km away
- 4.5100 km NE of Neiafu, Tonga · 3227 days ago · 35 km deep · 98 km away
- 4.4119 km SSW of Hihifo, Tonga · 3226 days ago · 106 km deep · 60 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000armk. Read Thu, Oct 1, 2026, 6:29 PM UTC.