Tonga earthquakes

M4.3 earthquake 97 km NE of Hihifo, Tonga

A magnitude 4.3 earthquake struck 97 km NE of Hihifo, Tonga on Mon, Sep 17, 2018, 6:07 PM GMT+13 (05:07 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.0 92 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
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-09-17 05:07:08 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.253° S, 173.242° 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 7.5 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.22
Depth from
Operator assigned
Station coverage gap
96°
Stations used
10

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 7 in the 30 days before it.

After

  1. 4.6109 km NE of Hihifo, Tonga · 2909 days ago · 10 km deep · 19 km away
  2. 4.3127 km NE of Hihifo, Tonga · 2892 days ago · 10 km deep · 39 km away
  3. 4.7100 km NNE of Hihifo, Tonga · 2892 days ago · 19 km deep · 25 km away
  4. 4.9130 km NE of Hihifo, Tonga · 2887 days ago · 10 km deep · 41 km away
  5. 5.092 km NE of Hihifo, Tonga · 2885 days ago · 10 km deep · 7 km away
  6. 4.454 km ESE of Hihifo, Tonga · 2885 days ago · 126 km deep · 97 km away
  7. 4.539 km NNE of Hihifo, Tonga · 2882 days ago · 51 km deep · 60 km away

Before

  1. 4.767 km N of Hihifo, Tonga · 2946 days ago · 82 km deep · 63 km away
  2. 4.9144 km NE of Hihifo, Tonga · 2948 days ago · 10 km deep · 47 km away
  3. 4.8123 km NE of Hihifo, Tonga · 2958 days ago · 10 km deep · 31 km away
  4. 4.6111 km ENE of Hihifo, Tonga · 2961 days ago · 10 km deep · 39 km away
  5. 4.6102 km NNE of Hihifo, Tonga · 2964 days ago · 19 km deep · 30 km away
  6. 5.1126 km NE of Hihifo, Tonga · 2965 days ago · 10 km deep · 29 km away
  7. 4.6134 km NNE of Hihifo, Tonga · 2965 days ago · 10 km deep · 53 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000hjq7. Read Fri, Oct 2, 2026, 7:53 PM UTC.