Strong Earthquake, Tonga

A very shallow magnitude 6.1 earthquake struck off-shore in the Tongan islands this morning.

The quake, which struck at 4:30 a.m. on Wednesday the 20th of August 2008 was located 105 km north-north-east of Hihifo, Tonga (235 km south-west of Apia, Samoa) at a depth of 8 km according to the U.S. Geological Survey.

Geoscience Australia, which recorded the event as very deep, report the quake as magnitude 5.5 at a depth of 300km. They estimate that the quake would have been felt up to about 270 km from the epicentre.

The Pacific Tsunami Warning Centre did not issue a bulletin for the event.

[Compiled from data supplied by the U.S. Geological Survey and its contributing agencies, the U.S. National Oceanic & Atmospheric Administration’s Pacific Tsunami Warning Centre, and Geoscience Australia.]

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