M4.5 earthquake 114 km NE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 114 km NE of Hihifo, Tonga on Sat, Aug 19, 2017, 10:19 PM GMT+13 (09:19 UTC), 10 km (6 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
- 2017-08-19 09:19:29 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.165° S, 173.108° 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 5.6 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 149°
- Stations used
- 22
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 5 in the 30 days before it.
After
- 4.5122 km E of Hihifo, Tonga · 3322 days ago · 10 km deep · 84 km away
- 5.161 km NNE of Hihifo, Tonga · 3313 days ago · 72 km deep · 66 km away · felt by 1
- 5.0157 km SSW of Lotofag?, Samoa · 3311 days ago · 10 km deep · 71 km away
- 4.7132 km ENE of Hihifo, Tonga · 3305 days ago · 10 km deep · 44 km away
- 4.6115 km NNE of Hihifo, Tonga · 3294 days ago · 11 km deep · 38 km away
- 4.465 km N of Hihifo, Tonga · 3284 days ago · 10 km deep · 75 km away
- 4.562 km NNW of Hihifo, Tonga · 3279 days ago · 10 km deep · 97 km away
Before
- 4.679 km NE of Hihifo, Tonga · 3335 days ago · 10 km deep · 36 km away
- 5.7137 km SW of Gataivai, Samoa · 3336 days ago · 8 km deep · 41 km away
- 4.587 km NE of Hihifo, Tonga · 3352 days ago · 10 km deep · 36 km away
- 4.4142 km NE of Hihifo, Tonga · 3354 days ago · 10 km deep · 30 km away
- 4.2162 km SSW of Lotofag?, Samoa · 3356 days ago · 10 km deep · 78 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000a9qe. Read Fri, Oct 2, 2026, 7:13 PM UTC.