Tsunami Response

Detect a strong earthquake lasting 20+ seconds near the coast, rapid ocean withdrawal (the sea receding hundreds of meters), or a loud roar from the ocean. These are the primary natural indicators of an approaching tsunami.

Begin evacuation the moment you detect any warning sign. You have approximately 10 minutes before the first wave. Move toward higher ground away from the ocean as fast as possible, regardless of official evacuation orders.

Move inland to high elevation. If you cannot outrun the tsunami, climb the nearest multi-story building using stairs (never elevators). Reach a minimum elevation of 30 meters (100 feet) above sea level.

Do not use elevators—they may lose power. Use stairs or exterior fire escapes.

Remain at your elevated location until authorities declare the area safe. Do not return to low-lying areas on your own initiative, even if the water recedes.

Tsunamis arrive in sets with multiple waves separated by 10-60 minutes apart. The second or third wave is often larger than the first.

Once all-clear is given, avoid contaminated water carrying sewage and chemicals, debris-filled areas, damaged buildings, and potential landslides. Do not consume food or water that contacted tsunami waters.