M4.6 earthquake 90 km NE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 90 km NE of Hihifo, Tonga on Thu, Aug 2, 2018, 3:59 PM GMT+13 (02:59 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M5.1 126 km NE 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-02 02:59:03 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 15.453° S, 173.131° 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 13.2 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 167°
- Stations used
- 67
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 10 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.393 km N of Hihifo, Tonga · 2977 days ago · 35 km deep · 95 km away
- 4.9108 km N of Hihifo, Tonga · 2972 days ago · 33 km deep · 76 km away · felt by 1
- 4.6134 km NNE of Hihifo, Tonga · 2966 days ago · 10 km deep · 78 km away
- 5.1126 km NE of Hihifo, Tonga · 2966 days ago · 10 km deep · 45 km away
- 4.6102 km NNE of Hihifo, Tonga · 2965 days ago · 19 km deep · 54 km away
- 4.6111 km ENE of Hihifo, Tonga · 2963 days ago · 10 km deep · 23 km away
- 4.8123 km NE of Hihifo, Tonga · 2960 days ago · 10 km deep · 35 km away
- 4.9144 km NE of Hihifo, Tonga · 2950 days ago · 10 km deep · 58 km away
- 4.767 km N of Hihifo, Tonga · 2947 days ago · 82 km deep · 75 km away
- 4.397 km NE of Hihifo, Tonga · 2939 days ago · 10 km deep · 25 km away
Before
- 4.623 km NNW of Hihifo, Tonga · 2996 days ago · 60 km deep · 85 km away
- 4.8136 km NE of Hihifo, Tonga · 2998 days ago · 10 km deep · 47 km away
- 4.5138 km SW of Gataivai, Samoa · 3006 days ago · 39 km deep · 92 km away
- 4.256 km NNE of Hihifo, Tonga · 3007 days ago · 90 km deep · 46 km away
- 4.878 km NNE of Hihifo, Tonga · 3011 days ago · 10 km deep · 30 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g1j1. Read Sun, Oct 4, 2026, 8:02 AM UTC.