Indonesia 8.6 earthquake: Indian Ocean tsunami warning system passes test
Earthquakes of Indonesia: 2004 - 2019
Tsunami Animation: Sumatra, 2004
The Sumatra Earthquake of 2004
The 2004 Indian Ocean earthquake and tsunami occurred at 00:58:53 UTC on 26 December, with an epicentre off the west coast of northern Sumatra, Indonesia. It was an undersea megathrust earthquake that registered a magnitude of 9.1–9.3 Mw, reaching a Mercalli intensity up to IX in certain areas. The earthquake was caused by a rupture along the fault between the Burma Plate and the Indian Plate.