M4.2 earthquake 55 km W of Pangai, Tonga

A magnitude 4.2 earthquake struck 55 km W of Pangai, Tonga on Tue, Apr 4, 2006, 1:08 PM GMT+13 (00:08 UTC), 28 km (18 mi) below the surface.

A larger quake followed: M8.0 2006 Tonga Earthquake. This one was a foreshock.

Map

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

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 usp000edn1. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 71 in the 60 days after this one and 4 in the 30 days before it.

The first 60 of 71.

From the USGS Earthquake Hazards Program and its partner networks, event usp000edn1. Read Mon, Oct 5, 2026, 7:42 AM UTC.