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Tsunami are large ocean waves caused by earthquakes, volcanic eruptions, or landslides under the sea. While rare in Tāmaki Makaurau / Auckland , they can still happen and are dangerous. Tsunami waves travel fast and may reach the coast with little warning. Tāmaki Makaurau / Auckland ’s low-lying coastal areas could be flooded or damaged if a tsunami occurs. Knowing your evacuation zones and what to do can help protect you and your community.

If an earthquake is long OR strong, GET GONE! If an earthquake lasts more than a minute or is so strong that you can’t stand up, move inland or to higher ground. This might be the only warning of a tsunami, so don’t wait for any further alerts.

Natural warning signs: If you see the sea suddenly pull back or hear a loud roar, this could mean a tsunami is coming. Evacuate right away.

Preparing for a Tsunami

 Although tsunamis are uncommon, it’s important to be ready. 

Know your risk: Use our hazard viewer to explore potential risks for different locations. These maps are for information only, updated regularly, and should not be solely relied upon for decision-making.