M4.7 earthquake Tonga
A magnitude 4.7 earthquake struck in Tonga on Sat, Aug 25, 2018, 6:48 AM GMT+13 (17:48 UTC), 216 km (134 mi) below the surface.
A larger quake followed: M4.9 157 km W 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-24 17:48:58 UTC
- Depth
- 215.8 km (134.1 mi), intermediate-depth
- Epicenter
- 20.114° S, 175.620° 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 8.3 km horizontally, 11.7 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 100°
- Stations used
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.9157 km W of Pangai, Tonga · 2950 days ago · 10 km deep · 51 km away
- 4.4100 km WNW of Pangai, Tonga · 2944 days ago · 207 km deep · 76 km away
- 4.1190 km WNW of Pangai, Tonga · 2903 days ago · 238 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000ggw6. Read Fri, Oct 2, 2026, 4:35 AM UTC.