Tonga earthquakes

M5.1 earthquake 63 km E of Neiafu, Tonga

A magnitude 5.1 earthquake struck 63 km E of Neiafu, Tonga on Fri, Jun 20, 2008, 5:20 AM GMT+13 (16:20 UTC), 10 km (6 mi) below the surface.

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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
5.1 (Mwc, centroid moment), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2008-06-19 16:20:48 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
18.707° S, 173.389° W
Region
Tonga
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
5.1Mwc, centroid momentUSGS National Earthquake Information CenterPreferred · Reviewed
5.12Mw, momentISC-GEM global catalogFinal · ±0.1
5.1Mwc, centroid momentGlobal CMT projectPreliminary

What happened

The USGS’s account of the effects of this earthquake.

no people dead or missing; no people injured; no buildings damaged or destroyed

From the USGS event page for usp000ga34. U.S. Geological Survey text and figures are in the public domain.

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)
Nodal plane 1
Strike 207°, dip 29°, rake 94°
Nodal plane 2
Strike 23°, dip 61°, rake 88°

How well it is located

Reviewed by a seismologist.

Depth from
OPERATOR_ASSIGNED
Station coverage gap
115°
Stations used
54

Nearest places

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

Nearby

Within 100 km, magnitude 2.1 and up: 6 in the 60 days after this one and 2 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp000ga34 (also filed as gcmtc200806191620a, gcmt20080619162048, iscgem10994892). Read Sat, Oct 3, 2026, 2:44 AM UTC.