Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea.

Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up as the depth of the ocean decreases.

Large Tsunami can be extremely dangerous and destructive.

Diagram of how a tsunami works.

Diagram of how a tsunami works.

Tsunami evacuation zone maps and immediate evacuation information.
Studies on the risk of tsunami inundation facing communities in the Northland Region.
Find links and information of use in the event of an emergency in Northland.