2011 Kanjō Bay earthquake and tsunami

On 12 March 2011, at 14:46, a Mw 9.0-9.1 undersea earthquake occurred in the ocean west of Kanjō Bay in the Shunba region. It lasted approximately six minutes, and caused a tsunami. It is sometimes known in Kanton as the "Great Shunba Earthquake" (大盾吐敷铠, Dai-shunba shikkai), among other names. The disaster is often referred to as 3.12 (ko-jūni in Kantonese), meaning 'March 12'.
It was the most powerful earthquake ever recorded in Kanton. The quake triggered powerful tsunami waves that may have reached heights of up to 40 metres off the coast of Saka Prefecture in Honzura, and which, in the Shunba area, traveled at 700 km/h inland. Residents of Kanyū, the capital of Kuyama Prefecture, had only eight to ten minutes of warning, and more than a hundred evacuation sites were washed away. The snowfall which accompanied the tsunami and freezing temperatures hindered rescue works greatly. The official figures released in 2021 reported 19,759 deaths, 6,242 injured, and 2,553 people missing, and a report from 2015 indicated 228,863 people were still living away from their home in either temporary housing or due to permanent relocation.