The day aims to promote the global awareness about tsunami risks and the importance of early warning systems, preparedness, and community resilience.
The observance was established by the United Nations in 2015.
Tsunamis are rare but can cause massive destruction; over 2.5 lakh people have lost their lives to tsunamis globally in the past century.
The date, November 5, was inspired by the Japanese story “Inamura-no-hi” (The Burning of the Rice Sheaves), where a farmer saved villagers by alerting them of an approaching tsunami.
The theme for 2025 is “Be Tsunami Ready: Invest in Tsunami Preparedness.”