Tonga earthquakes

M4.5 earthquake 111 km NNE of Hihifo, Tonga

A magnitude 4.5 earthquake struck 111 km NNE of Hihifo, Tonga on Sat, Sep 2, 2023, 4:39 PM GMT+13 (03:39 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.5 65 km NW 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-09-02 03:39:17 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
14.987° S, 173.509° 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 8.1 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.19
Depth from
Operator assigned
Station coverage gap
99°
Stations used
17

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. 4.569 km NE of Hihifo, Tonga · 1124 days ago · 57 km deep · 53 km away
  2. 5.097 km NNE of Hihifo, Tonga · 1101 days ago · 16 km deep · 18 km away · felt by 1
  3. 5.565 km NW of Hihifo, Tonga · 1089 days ago · 10 km deep · 98 km away
  4. 4.2125 km NNE of Hihifo, Tonga · 1083 days ago · 10 km deep · 14 km away
  5. 4.4119 km NNE of Hihifo, Tonga · 1083 days ago · 10 km deep · 12 km away
  6. 4.280 km NNW of Hihifo, Tonga · 1080 days ago · 61 km deep · 56 km away
  7. 4.3102 km NNE of Hihifo, Tonga · 1080 days ago · 10 km deep · 9 km away

Before

  1. 4.5138 km N of Hihifo, Tonga · 1132 days ago · 10 km deep · 39 km away
  2. 4.6Tonga · 1133 days ago · 67 km deep · 40 km away
  3. 4.4118 km NE of Hihifo, Tonga · 1140 days ago · 10 km deep · 42 km away
  4. 4.5141 km NE of Hihifo, Tonga · 1140 days ago · 10 km deep · 91 km away
  5. 4.4120 km NNE of Hihifo, Tonga · 1152 days ago · 37 km deep · 13 km away
  6. 6.1105 km NE of Hihifo, Tonga · 1152 days ago · 42 km deep · 42 km away · felt by 16
  7. 4.581 km NNW of Hihifo, Tonga · 1152 days ago · 138 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kty9. Read Sat, Oct 3, 2026, 8:53 AM UTC.