New Zealand’s tectonic setting in the Pacific puts us at risk from many different tsunami sources, some may be generated and arrive at our nearest coasts in less than an hour.
To help our experts, we have the Tsunami Gauge Network which is used with the DART Network to monitor and assess the hazard and risk of potential tsunami around New Zealand, Raoul Island, and Wharekauri Chatham Island.
The Tsunami Gauge network has been made possible by funding from Toitū Te Whenua LINZ. Data infrastructure, management, and dissemination is supported by the GeoNet programme.
For a local source tsunami, which could arrive in minutes, there won’t be time for an official warning. It is important to recognise the natural warning signs and act quickly.
If you are near a shore and experience any of the following, take action. Do not wait for official warnings.
Drop, Cover and Hold during the shaking. Protect yourself from the earthquake first.
As soon as the shaking stops, move immediately to the nearest high ground, out of all tsunami evacuation zones, or as far inland as you can.
Remember: Long or Strong, Get Gone.
NEMA have a great website with information on what to do before, during and after a tsunami.