Tonga earthquakes

M4.4 earthquake 79 km WNW of Neiafu, Tonga

A magnitude 4.4 earthquake struck 79 km WNW of Neiafu, Tonga on Fri, Jul 21, 2023, 11:38 AM GMT+13 (22:38 UTC), 131 km (82 mi) below the surface.

A larger quake followed: M4.8 90 km NNW of Neiafu, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-07-20 22:38:46 UTC
Depth
131.3 km (81.6 mi), intermediate-depth
Epicenter
18.353° S, 174.664° 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, 8.6 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
109°
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: 5 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.3156 km NW of Neiafu, Tonga · 1153 days ago · 229 km deep · 84 km away
  2. 4.890 km NNW of Neiafu, Tonga · 1141 days ago · 64 km deep · 62 km away
  3. 4.486 km WSW of Neiafu, Tonga · 1129 days ago · 124 km deep · 64 km away
  4. 4.622 km SSE of Neiafu, Tonga · 1116 days ago · 67 km deep · 95 km away
  5. 4.3136 km WNW of Neiafu, Tonga · 1116 days ago · 216 km deep · 62 km away

Before

  1. 4.1162 km NW of Neiafu, Tonga · 1171 days ago · 221 km deep · 93 km away
  2. 4.7141 km WNW of Neiafu, Tonga · 1171 days ago · 214 km deep · 63 km away
  3. 4.3159 km NW of Neiafu, Tonga · 1180 days ago · 223 km deep · 89 km away
  4. 6.9132 km NW of Neiafu, Tonga · 1189 days ago · 229 km deep · 60 km away · felt by 21 · tsunami flag

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000kw6p. Read Fri, Oct 2, 2026, 11:28 PM UTC.