A tsunami is a seismic sea wave (a series of waves caused by an earthquake or landslide) that can cause devastation to coastal areas. They used to be inaccurately referred to as tidal waves, which are shallow water waves caused by the earth’s gravitational pull.
They don’t always come with a warning. Depending on how close you are to the event that triggers the tsunami, you might not have any official orders to evacuate or even any warning. Preparation is the key. Anyone living on the coast, especially near the beach, should be ready for big waves.
