On 11 March 2011 Friday, at 14:46 with the local time (05:46 UTC), a massive undersea megathrust earthquakenotes 1 off the coast of Japan occurred. The earthquake triggered massive tsunami with waves up to 40.5 meters (133 feet) high. The waves traveled inland as far as 6 miles (10 km) and caused extensive and severe structural damage in north-eastern Japan. Airports, roads and railroads destroyed, 127,290 buildings totally collapsed, 272,788 buildings half collapsed, and another 747,989 buildings partially damaged. A dam collapsed. The tsunami also caused nuclear accidents, primarily the level 7 meltdowns (means Major accident, highst level, see notes 2) at three reactors in the Fukushima Daiichi Nuclear Power Plant complex.
On 10 March 2015, it was announced that the confirmed casualties were 15,894 deaths, 6,152 injured, and 2,562 people missing.