Tonga earthquakes

M4.2 earthquake 77 km N of Hihifo, Tonga

A magnitude 4.2 earthquake struck 77 km N of Hihifo, Tonga on Fri, Jul 7, 2023, 11:29 PM GMT+13 (10:29 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M6.1 105 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-07 10:29:46 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
15.254° S, 173.859° 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 6.4 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.21
Depth from
Operator assigned
Station coverage gap
119°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.563 km NNE of Hihifo, Tonga · 1178 days ago · 35 km deep · 38 km away
  2. 4.4101 km WNW of Hihifo, Tonga · 1176 days ago · 180 km deep · 87 km away
  3. 4.4124 km NW of Hihifo, Tonga · 1176 days ago · 205 km deep · 75 km away
  4. 4.289 km WNW of Hihifo, Tonga · 1175 days ago · 138 km deep · 97 km away
  5. 4.1Tonga · 1172 days ago · 164 km deep · 84 km away
  6. 4.5Tonga · 1171 days ago · 206 km deep · 80 km away
  7. 4.2118 km WNW of Hihifo, Tonga · 1158 days ago · 177 km deep · 93 km away
  8. 4.581 km NNW of Hihifo, Tonga · 1151 days ago · 138 km deep · 15 km away
  9. 6.1105 km NE of Hihifo, Tonga · 1151 days ago · 42 km deep · 72 km away · felt by 16
  10. 4.4120 km NNE of Hihifo, Tonga · 1151 days ago · 37 km deep · 61 km away
  11. 4.5113 km WNW of Hihifo, Tonga · 1151 days ago · 192 km deep · 93 km away
  12. 4.4118 km NE of Hihifo, Tonga · 1139 days ago · 10 km deep · 79 km away
  13. 4.6Tonga · 1133 days ago · 67 km deep · 23 km away
  14. 4.5138 km N of Hihifo, Tonga · 1131 days ago · 10 km deep · 63 km away
  15. 4.488 km WNW of Hihifo, Tonga · 1127 days ago · 207 km deep · 81 km away
  16. 4.5111 km NNE of Hihifo, Tonga · 1127 days ago · 10 km deep · 48 km away

Before

  1. 4.259 km NNW of Hihifo, Tonga · 1188 days ago · 171 km deep · 38 km away
  2. 4.8103 km NNW of Hihifo, Tonga · 1194 days ago · 171 km deep · 47 km away
  3. 5.4123 km NE of Hihifo, Tonga · 1197 days ago · 35 km deep · 94 km away · felt by 3
  4. 4.534 km NE of Hihifo, Tonga · 1198 days ago · 21 km deep · 65 km away
  5. 4.4117 km NE of Hihifo, Tonga · 1200 days ago · 10 km deep · 84 km away
  6. 5.7126 km NNE of Hihifo, Tonga · 1203 days ago · 8 km deep · 73 km away
  7. 4.5138 km NE of Hihifo, Tonga · 1203 days ago · 10 km deep · 96 km away
  8. 4.558 km N of Hihifo, Tonga · 1207 days ago · 79 km deep · 24 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kfq2. Read Fri, Oct 2, 2026, 4:11 PM UTC.