M5.0 earthquake 141 km N of Neiafu, Tonga
A magnitude 5.0 earthquake struck 141 km N of Neiafu, Tonga on Mon, Sep 18, 2017, 2:31 AM GMT-12 (14:31 UTC), 28 km (18 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
- 5.0 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-09-18 14:31:27 UTC
- Depth
- 28.3 km (17.6 mi), shallow
- Epicenter
- 17.369° S, 173.957° 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 10.6 km horizontally, 4.6 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- From location
- Station coverage gap
- 69°
- Stations used
- 174
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.3127 km N of Neiafu, Tonga · 3281 days ago · 145 km deep · 32 km away
- 5.3146 km NNW of Neiafu, Tonga · 3243 days ago · 156 km deep · 76 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000apxn. Read Fri, Oct 2, 2026, 12:20 AM UTC.