A tsunami (tidal wave), a large sea wave caused by earthquakes or undersea disturbances that can cause coastal flooding and damage.
地震の後、津波警報が出された。
A tsunami warning was issued after the earthquake.
高台へ避難しないと津波で危険だ。
If you don't evacuate to high ground, you risk the tsunami.
津波は遠く離れた場所でも破壊的な影響を与えることがある。
Tsunamis can have devastating effects even in distant locations.