Tonga earthquakes

M4.7 earthquake 103 km NNE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 103 km NNE of Hihifo, Tonga on Thu, Jan 18, 2018, 9:00 PM GMT+14 (07:00 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.1 103 km NE of Hihifo, Tonga. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.7 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-01-18 07:00:59 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.065° S, 173.505° 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 6.6 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
84°
Stations used
27

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.8100 km NE of Hihifo, Tonga · 3178 days ago · 38 km deep · 38 km away
  2. 4.4115 km NE of Hihifo, Tonga · 3177 days ago · 10 km deep · 42 km away
  3. 4.4Samoa Islands region · 3169 days ago · 10 km deep · 99 km away
  4. 5.1103 km NE of Hihifo, Tonga · 3157 days ago · 10 km deep · 61 km away
  5. 4.974 km NNE of Hihifo, Tonga · 3150 days ago · 35 km deep · 37 km away
  6. 4.4125 km NE of Hihifo, Tonga · 3137 days ago · 10 km deep · 46 km away
  7. 4.982 km NNE of Hihifo, Tonga · 3136 days ago · 36 km deep · 28 km away
  8. 5.093 km ENE of Hihifo, Tonga · 3133 days ago · 10 km deep · 77 km away
  9. 4.873 km NE of Hihifo, Tonga · 3129 days ago · 10 km deep · 51 km away
  10. 4.697 km NNE of Hihifo, Tonga · 3123 days ago · 10 km deep · 7 km away

Before

  1. 5.1146 km SSW of Gataivai, Samoa · 3179 days ago · 10 km deep · 81 km away
  2. 4.541 km NE of Hihifo, Tonga · 3183 days ago · 35 km deep · 67 km away
  3. 4.222 km NW of Hihifo, Tonga · 3198 days ago · 129 km deep · 93 km away
  4. 4.5126 km NE of Hihifo, Tonga · 3202 days ago · 35 km deep · 47 km away
  5. 4.443 km NW of Hihifo, Tonga · 3203 days ago · 118 km deep · 90 km away
  6. 5.5113 km NE of Hihifo, Tonga · 3204 days ago · 38 km deep · 70 km away
  7. 4.7103 km NNE of Hihifo, Tonga · 3208 days ago · 10 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000crr2. Read Fri, Oct 2, 2026, 3:23 PM UTC.