Indian Ocean nations were on tsunami watch following two major earthquakes off the coast of Sumatra in Indonesia.
Below is a list of the world's deadliest earthquakes, including quake-induced tsunamis, over the past century.
2011 Japan: More than 19,000 were killed when a tsunami triggered by an undersea earthquake slammed into the northeast coast, triggering a nuclear crisis at the Fukushima Daiichi atomic plant. Magnitude 9.0.
2010 Haiti: Between 250,000 and 300,000 dead. Magnitude 7.0.
2008 Sichuan province, China: 87,000 dead or missing. Magnitude 8.0.
2005 Indian and Pakistani Kashmir: At least 75,000 killed. Magnitude 7.6.
2004 Indian Ocean: More than 226,000 died when a tsunami sparked by an undersea earthquake off Indonesia hit countries around the Indian Ocean. Magnitude 9.1.
1976 Tangshan, Hebei Province, China: Officials said 242,000 people died, although some western sources said the toll was higher. Magnitude 7.8.
1970 Mount Huascaran, Peru: Earthquake and resulting avalanche killed 66,800. Magnitude 7.5.
1939 Erzincan, Turkey: 35,000 - 40,000 killed. Magnitude 8.0.
1935 Quetta, India (now Pakistan): More than 50,000 killed. Magnitude 7.6.
1932 Gansu province, China: Around 70,000 died. Magnitude 8.0.
1927 Nanshan province, China: Up to 200,000 dead. Magnitude 8.0.
1923 Yokohama, Japan: More than 142,000 people died in the Great Kanto earthquake and resulting fire, which destroyed Tokyo. Magnitude 8.2.
1920 Gansu, northwestern China: More than 100,000 killed. Magnitude 8.5.
