What was the date of the tsunami in Japan?

As of 2014, the most recent significant tsunami event affecting the coast of Japan occurred on March 11, 2011. The tsunami was caused by a 9.0 magnitude earthquake off the coast of Honshu Island, Japan, the fourth most powerful earthquake in the world since 1900.

The tsunami resulted in the deaths of at least 20,319 people and over $210 billion in property damage. As of 2014, it was the costliest natural disaster in recorded history. Researchers determined that the northeast area of Japan was subjected to a tsunami wave that rose to a maximum height of 132.5 feet. The tsunami was also responsible for the flooding and subsequent partial meltdown of nuclear material at the Fukushima Dai-ichi power plant.