DID YOU KNOW?
The 2004 Indian Ocean tsunami was one of the deadliest natural disasters in history, killing more than 230,000 people across 14 countries. [2] Tsunamis are rare, but when they strike, there is little time to react — which makes preparedness critical.
KNOW THE RISK
- Tsunamis are extremely rare, but can pose significant risk to coastal communities. [1]
- They can strike any ocean coast at any time, and travel at speeds up to 500 mph in deep water.
- While impossible to predict precisely, tsunamis are most commonly triggered by undersea earthquakes or landslides. [1]
- Tsunamis cannot be prevented, but early warning systems and evacuation plans can save lives.
MITIGATE THE RISK
1. Know the Natural Warning Signs
- If you’re near the coast and feel a strong earthquake, a tsunami could follow. Move inland and to higher ground immediately. [1]
2. Heed Alerts and Warnings
- If you receive a tsunami alert or notice sudden, unusual retreat of water from the shore, evacuate without delay. [1]
3. Stay Clear Until the All-Clear is Given
- Tsunamis often come in waves over several hours. Don’t return to evacuation zones until authorities say it is safe.
4. Avoid Entering Damaged Buildings
- After a tsunami, buildings may be structurally unsound or contaminated. Let professionals inspect them before entering. [1]
TSUNAMI SAFETY REMINDER
Tsunamis give little warning — but there are signs. Learn to recognize natural alerts, trust official warnings, and never wait to evacuate. Your response in the first few minutes can determine your survival.