Coastal Christchurch and Banks Peninsula faces tsunami risk.
Tsunamis are categorised into three groups - local source, regional source and distant source.
Generated from a large earthquake around, or near, New Zealand. The chances of a local source tsunami is low however it is important to know that if one does happen you must evacuate immediately as you may only have a short time frame.
Generated from a large earthquake a long distance away such as South America or Alaska. This is the biggest tsunami risk to the Christchurch coastline, however, there will be time to issue an official warning and several hours to evacuate areas at risk.
Tsunami evacuation zone maps and evacuation information.
Residents and business in the coastal evacuation zones should have plans in place for an evacuation.
A network of tsunami sirens is installed along the coastline from Brooklands to Taylor's Mistake.