Tonga earthquakes

M5.2 earthquake Tonga region

A magnitude 5.2 earthquake struck in the Tonga region on Tue, Jun 27, 2023, 1:36 AM GMT+13 (12:36 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.6 249 km SSW of ‘Ohonua, Tonga. This one was a foreshock.

Nuku‘alofa forecast More in Tonga

Map

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

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The earthquake

Magnitude: 5.2 (Mww, W-phase moment), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Tue, Jun 27, 2023, 1:36 AM GMT+13
UTC: 2023-06-26 12:36:07 UTC
Depth: 35.0 km (21.7 mi), shallow
Epicenter: 23.887° S, 175.970° 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting: Reverse (thrust)
Moment magnitude: 5.2 Mww
Nodal plane 1: Strike 17°, dip 41°, rake 87°
Nodal plane 2: Strike 201°, dip 49°, rake 93°

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 9.6 km horizontally, 1.9 km in depth
Magnitude uncertainty: ±0.07
Depth from: Operator assigned
Station coverage gap: 102°
Stations used: 63

Nearest places

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

Nuku‘alofa, TongaPopulation 22,400. Forecast316 kmSSW

Nearby

Within 100 km, magnitude 2.2 and up: 40 in the 60 days after this one and 97 in the 30 days before it.

After

Before

Earthquakes today Tonga earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kb4m. Read Sun, Oct 4, 2026, 12:49 PM UTC.