M4.5 earthquake 36 km NNW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 36 km NNW of Hihifo, Tonga on Wed, Aug 23, 2017, 9:13 PM GMT+13 (08:13 UTC), 112 km (70 mi) below the surface.
A larger quake followed: M5.1 61 km NNE of Hihifo, 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
- 2017-08-23 08:13:01 UTC
- Depth
- 112.2 km (69.7 mi), intermediate-depth
- Epicenter
- 15.681° S, 173.980° 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 14.7 km horizontally, 11.3 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 144°
- Stations used
- 25
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.2116 km NW of Hihifo, Tonga · 3314 days ago · 256 km deep · 84 km away
- 5.161 km NNE of Hihifo, Tonga · 3313 days ago · 72 km deep · 45 km away · felt by 1
- 4.8107 km NNW of Hihifo, Tonga · 3307 days ago · 148 km deep · 72 km away
- 4.6115 km NNE of Hihifo, Tonga · 3294 days ago · 11 km deep · 99 km away
- 4.465 km N of Hihifo, Tonga · 3284 days ago · 10 km deep · 42 km away
- 4.562 km NNW of Hihifo, Tonga · 3279 days ago · 10 km deep · 29 km away
- 4.4107 km NNE of Hihifo, Tonga · 3271 days ago · 29 km deep · 95 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000abrg. Read Fri, Oct 2, 2026, 6:27 PM UTC.