M4.3 earthquake 132 km WNW of Neiafu, Tonga
A magnitude 4.3 earthquake struck 132 km WNW of Neiafu, Tonga on Sun, Oct 22, 2017, 12:04 PM GMT+13 (23:04 UTC), 207 km (129 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
- 2017-10-21 23:04:48 UTC
- Depth
- 207.1 km (128.7 mi), intermediate-depth
- Epicenter
- 18.082° S, 175.084° 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 11.9 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- From location
- Station coverage gap
- 95°
- Stations used
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.7123 km WNW of Neiafu, Tonga · 3247 days ago · 199 km deep · 16 km away
- 4.7140 km W of Neiafu, Tonga · 3243 days ago · 242 km deep · 48 km away
- 5.3146 km NNW of Neiafu, Tonga · 3242 days ago · 156 km deep · 80 km away
- 4.1122 km NW of Neiafu, Tonga · 3241 days ago · 212 km deep · 20 km away
- 4.1146 km WNW of Neiafu, Tonga · 3234 days ago · 216 km deep · 15 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000axma. Read Thu, Oct 1, 2026, 7:26 AM UTC.