M4.6 earthquake 203 km SW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 203 km SW of Hihifo, Tonga on Thu, Oct 5, 2017, 7:36 AM GMT-12 (19:36 UTC), 266 km (166 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-10-05 19:36:18 UTC
- Depth
- 266.5 km (165.6 mi), intermediate-depth
- Epicenter
- 17.157° S, 175.242° 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 12.7 km horizontally, 10.5 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 92°
- Stations used
- 38
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.5181 km WNW of Neiafu, Tonga · 3271 days ago · 208 km deep · 68 km away
- 5.3146 km NNW of Neiafu, Tonga · 3243 days ago · 156 km deep · 72 km away
- 4.1122 km NW of Neiafu, Tonga · 3242 days ago · 212 km deep · 100 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000aqs9. Read Fri, Oct 2, 2026, 3:50 PM UTC.