M4.6 earthquake 102 km NNE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 102 km NNE of Hihifo, Tonga on Wed, Aug 22, 2018, 7:05 PM GMT+13 (06:05 UTC), 19 km (12 mi) below the surface.
A larger quake followed: M4.9 144 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
- 2018-08-22 06:05:21 UTC
- Depth
- 19.2 km (11.9 mi), shallow
- Epicenter
- 15.084° S, 173.461° 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, 4.9 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- From location
- Station coverage gap
- 61°
- Stations used
- 44
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.6111 km ENE of Hihifo, Tonga · 2962 days ago · 10 km deep · 68 km away
- 4.8123 km NE of Hihifo, Tonga · 2958 days ago · 10 km deep · 55 km away
- 4.9144 km NE of Hihifo, Tonga · 2948 days ago · 10 km deep · 60 km away
- 4.767 km N of Hihifo, Tonga · 2946 days ago · 82 km deep · 49 km away
- 4.3100 km NNW of Hihifo, Tonga · 2939 days ago · 153 km deep · 80 km away
- 4.397 km NE of Hihifo, Tonga · 2938 days ago · 10 km deep · 30 km away
- 4.6109 km NE of Hihifo, Tonga · 2909 days ago · 10 km deep · 47 km away
Before
- 5.1126 km NE of Hihifo, Tonga · 2965 days ago · 10 km deep · 42 km away
- 4.6134 km NNE of Hihifo, Tonga · 2965 days ago · 10 km deep · 32 km away
- 4.9108 km N of Hihifo, Tonga · 2971 days ago · 33 km deep · 23 km away · felt by 1
- 4.393 km N of Hihifo, Tonga · 2976 days ago · 35 km deep · 53 km away
- 4.690 km NE of Hihifo, Tonga · 2984 days ago · 35 km deep · 54 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000h60r. Read Sat, Oct 3, 2026, 1:05 AM UTC.