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2004 Indian Ocean earthquake and tsunami

From top, left to right: Banda Aceh, Indonesia, after the tsunamiKorean rescue workers recovering a body under debrisa man searching through rubble in Meulabohpeople running away from the tsunamia tsunami memorial in Kerala, India 2004 Indian Ocean earthquake and tsunami is located in Indian Ocean 2004 Indian Ocean earthquake and tsunami Location within Indian Ocean Show map of Indian Ocean Show map of Sumatra Show map of Earth Show all UTC time 2004-12-26 00:58:53 ISC event 7453151 USGS-ANSS ComCat Local date 26 December 2004; 21 years ago[1] Local time 07:28:53 UTC+06:30 07:58:53 UTC+07:00 08:58:53 UTC+08:00 Duration 10 minutes Magnitude 9.2–9.3 Mw Depth 30 km (19 mi)[1] Epicentre 3.316°N 95.854°E[1] Type Megathrust Areas affected Indian Ocean coastline areas Total damage US$15 billion[2] Max. intensity MMI IX (Violent) Tsunami 15 to 30 m (50 to 100 ft);[3][4] max. 51 m (167 ft)[5]

Casualties 227,898 dead[6][7]

On 26 December 2004, at 07:58:53 local time (UTC+7), a Mw 9.2–9.3 earthquake struck with its epicenter off the west coast of Aceh, in northern Sumatra, Indonesia. The undersea megathrust earthquake, known in the scientific community as the Sumatra–Andaman earthquake,[8][9] was caused by a rupture along the fault boundary between the Burma plate and the Indian plate, and reached a maximum Mercalli intensity of IX in some areas.

The earthquake caused a massive tsunami with waves up to 30 m (100 ft) high, referred to by British and Commonwealth media as the Boxing Day tsunami, after the Boxing Day holiday, or the Asian tsunami,[10] which devastated communities along the surrounding coasts of the Indian Ocean, killing an estimated 227,898 people in 14 countries, especially in Aceh in Indonesia, Sri Lanka, Tamil Nadu in India, and Khao Lak in Thailand. The direct result was severe disruption to living conditions and commerce in coastal provinces of these and other surrounding countries. It is the deadliest tsunami in history, the deadliest natural disaster of the 21st century,[11] and one of the deadliest natural disasters in recorded history.[12] It is also the worst natural disaster in the history of Indonesia, the Maldives, Sri Lanka, and Thailand.[13]

The earthquake itself is the most powerful earthquake ever recorded in Asia, the strongest of the 21st century, and the second- or third-most powerful globally since modern seismography began in 1900.[14][a] It had the longest fault rupture ever observed, between 1,200 to 1,300 kilometres (746 to 808 mi), and had the longest duration of faulting ever observed, lasting at least ten minutes.[18] It caused the entire planet to vibrate by as much as 10 mm (0.4 in),[19] and also remotely triggered earthquakes as far away as Alaska.[20] Its epicentre was located between Simeulue and mainland Sumatra.[21] The plight of the affected people and countries prompted a worldwide humanitarian response, with donations totaling more than US$14 billion[22] (equivalent to US$24 billion in 2025 currency).