Tsunami warning systems are designed to detect and alert communities about potential tsunamis, which are large ocean waves caused by underwater earthquakes or volcanic eruptions. These systems use a network of seismographs to monitor seismic activity and buoys equipped with sensors to measure changes in ocean water levels. When a significant event is detected, alerts are sent to local authorities and the public. The warnings are categorized into different levels, indicating the severity and expected impact of the tsunami. Communities in tsunami-prone areas often have evacuation plans in place, ensuring that residents can move to higher ground quickly and safely when a warning is issued.