M4.6 earthquake 170 km WNW of Pangai, Tonga
A magnitude 4.6 earthquake struck 170 km WNW of Pangai, Tonga on Sun, Oct 8, 2017, 6:54 AM GMT+13 (17:54 UTC), 188 km (117 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-10-07 17:54:37 UTC
- Depth
- 188.1 km (116.9 mi), intermediate-depth
- Epicenter
- 19.004° S, 175.731° 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 10.2 km horizontally, 3.2 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 81°
- Stations used
- 115
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 6.1156 km NW of Pangai, Tonga · 3280 days ago · 10 km deep · 17 km away · felt by 1
- 4.7140 km W of Neiafu, Tonga · 3243 days ago · 242 km deep · 75 km away
- 4.491 km WNW of Pangai, Tonga · 3234 days ago · 196 km deep · 79 km away
- 4.3125 km W of Pangai, Tonga · 3224 days ago · 223 km deep · 94 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000b2jk. Read Thu, Oct 1, 2026, 3:24 AM UTC.