The October 2010 Sumatra earthquake was a magnitude 7.7 Mw earthquake, which occurred on 25 October 2010 off the western coast of Sumatra, Indonesia at 21:42 local time (14:42 UTC). The earthquake occurred on the same fault that produced the 2004 Indian Ocean earthquake. It was widely felt across the provinces of Bengkulu and West Sumatra and resulted in a substantial localized tsunami that struck the Mentawai Islands.
Many villages on the islands were affected by the tsunami, which reached a height of 3m (9 ft) and swept as far as 600m (1800 ft) inland. The tsunami caused widespread destruction that displaced more than 20,000 people and affected about 4,000 households. 435 people were reported to have been killed, with over 100 more still missing. The subsequent relief effort was hampered by bad weather and the remoteness of the islands, which led to delays in the reporting of casualties
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