M4.5 earthquake 68 km WNW of Pangai, Tonga
A magnitude 4.5 earthquake struck 68 km WNW of Pangai, Tonga on Mon, Dec 18, 2017, 7:14 PM GMT+13 (06:14 UTC), 187 km (116 mi) below the surface.
A larger quake followed: M4.6 118 km WNW 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-12-18 06:14:44 UTC
- Depth
- 187.2 km (116.3 mi), intermediate-depth
- Epicenter
- 19.642° S, 174.985° 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 15.0 km horizontally, 9.3 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 96°
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
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
- 4.524 km NW of Pangai, Tonga · 3203 days ago · 81 km deep · 48 km away
- 4.5122 km W of Pangai, Tonga · 3201 days ago · 203 km deep · 62 km away
- 4.5149 km W of Pangai, Tonga · 3195 days ago · 201 km deep · 85 km away
- 4.5Tonga · 3186 days ago · 101 km deep · 29 km away
- 4.6118 km WNW of Pangai, Tonga · 3160 days ago · 139 km deep · 51 km away
- 4.4155 km NW of Pangai, Tonga · 3152 days ago · 193 km deep · 97 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000bz14. Read Thu, Oct 1, 2026, 9:35 AM UTC.