Tonga earthquakes

M4.1 earthquake Tonga

A magnitude 4.1 earthquake struck in Tonga on Wed, Jul 19, 2023, 9:23 AM GMT+13 (20:23 UTC), 164 km (102 mi) below the surface.

A larger quake followed: M4.8 82 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
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-18 20:23:50 UTC
Depth
163.6 km (101.7 mi), intermediate-depth
Epicenter
15.501° S, 174.596° 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 7.7 km horizontally, 7.3 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
53°
Stations used
35

Nearest places

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

Nearby

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

After

  1. 4.5Tonga · 1173 days ago · 206 km deep · 4 km away
  2. 4.2118 km WNW of Hihifo, Tonga · 1160 days ago · 177 km deep · 20 km away
  3. 4.581 km NNW of Hihifo, Tonga · 1153 days ago · 138 km deep · 70 km away
  4. 4.5113 km WNW of Hihifo, Tonga · 1153 days ago · 192 km deep · 15 km away
  5. 4.6Tonga · 1135 days ago · 67 km deep · 92 km away
  6. 4.488 km WNW of Hihifo, Tonga · 1129 days ago · 207 km deep · 12 km away
  7. 4.0159 km WNW of Hihifo, Tonga · 1119 days ago · 289 km deep · 60 km away
  8. 4.882 km NW of Hihifo, Tonga · 1115 days ago · 184 km deep · 19 km away

Before

  1. 4.289 km WNW of Hihifo, Tonga · 1177 days ago · 138 km deep · 29 km away
  2. 4.4124 km NW of Hihifo, Tonga · 1178 days ago · 205 km deep · 46 km away
  3. 4.4101 km WNW of Hihifo, Tonga · 1178 days ago · 180 km deep · 3 km away
  4. 4.237 km SW of Hihifo, Tonga · 1180 days ago · 110 km deep · 99 km away
  5. 4.3106 km WNW of Hihifo, Tonga · 1180 days ago · 285 km deep · 23 km away
  6. 4.277 km N of Hihifo, Tonga · 1185 days ago · 35 km deep · 84 km away
  7. 4.259 km NNW of Hihifo, Tonga · 1190 days ago · 171 km deep · 54 km away
  8. 4.8103 km NNW of Hihifo, Tonga · 1196 days ago · 171 km deep · 51 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kvpj. Read Sun, Oct 4, 2026, 4:26 PM UTC.