Tsunami

A tsunami is a series of waves caused by large earthquakes. All of New Zealand’s coastline is at risk of tsunami. A tsunami ocean wave can grow to become a fastmoving wall of water.

If you are near the coast or in a tsunami zone and experience any of the following:

• An earthquake which makes it's hard to stand up
• The earthquake lasts a minute or more
• Sudden rise or fall in sea level
• Loud and unusual noises from the sea
• Move immediately to the nearest high ground, or as far inland as you can. Walk or bike if possible
• Do not wait for official warnings
• Tsunamis can arrive in minutes. Often there is no time for an official warning

Note: There may be more than one wave, each potentially bigger than the one preceding it. It may not be safe to be near the coast for up to 24 hours

University field trips and sea vessels

• All planned field trips in coastal areas must be postponed if a tsunami alert is issued. Field trip leaders should be contacted
• Any University vessels in port or at sea must follow advice from the harbour master
• A warning will be issued by five prolonged blasts and, in major ports, sirens
• Skippers must immediately monitor VHF radios to receive further instructions

Staff

• Ensure you have a mobile phone with you to receive any Emergency Mobile Alerts

Tsunami specific information: Get tsunami ready

You can also view one of Auckland Council's tsunami maps. These show the affected coastline if a tsunami should occur.

View now: Tsunami map.

Document Control
Version: 2.0
Last Updated: Oct 2025
Next Review: Oct 2028
Owner: hsw@auckland.ac.nz
Approver: Associate Director, Health Safety & Wellbeing