Tonga earthquakes

M4.5 earthquake 103 km NNE of Hihifo, Tonga

A magnitude 4.5 earthquake struck 103 km NNE of Hihifo, Tonga on Tue, Apr 17, 2018, 2:25 AM GMT+13 (13:25 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.8 141 km SSW of Gataivai, Samoa. 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-04-16 13:25:59 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
15.161° S, 173.283° 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 9.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.19
Depth from
Operator assigned
Station coverage gap
153°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.563 km N of Hihifo, Tonga · 3085 days ago · 55 km deep · 53 km away
  2. 4.680 km NE of Hihifo, Tonga · 3074 days ago · 10 km deep · 35 km away
  3. 5.2130 km ENE of Hihifo, Tonga · 3059 days ago · 10 km deep · 58 km away
  4. 4.567 km NE of Hihifo, Tonga · 3057 days ago · 35 km deep · 37 km away
  5. 4.7140 km ENE of Hihifo, Tonga · 3057 days ago · 10 km deep · 75 km away
  6. 4.599 km NNE of Hihifo, Tonga · 3045 days ago · 33 km deep · 13 km away
  7. 5.8141 km SSW of Gataivai, Samoa · 3044 days ago · 10 km deep · 48 km away
  8. 5.4133 km NNE of Hihifo, Tonga · 3044 days ago · 10 km deep · 29 km away
  9. 4.586 km NNE of Hihifo, Tonga · 3042 days ago · 10 km deep · 20 km away
  10. 5.0Samoa Islands region · 3037 days ago · 10 km deep · 29 km away
  11. 4.5129 km NNE of Hihifo, Tonga · 3035 days ago · 25 km deep · 30 km away
  12. 4.4119 km N of Hihifo, Tonga · 3032 days ago · 31 km deep · 45 km away
  13. 5.3117 km ENE of Hihifo, Tonga · 3031 days ago · 55 km deep · 55 km away · felt by 9

Before

  1. 4.899 km ENE of Hihifo, Tonga · 3092 days ago · 71 km deep · 44 km away
  2. 5.192 km NNE of Hihifo, Tonga · 3107 days ago · 10 km deep · 18 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000dpb0. Read Fri, Oct 2, 2026, 1:31 PM UTC.