NSW State Emergency Service | NSW SES

Tsunami

The NSW SES is responsible for planning for and coordinating the initial response to Tsunami in NSW. 

In planning for tsunami, the NSW SES has worked closely with other State and Federal Government agencies in the development of a NSW Tsunami Sub Plan. This plan outlines the responsibilities of the NSW SES and other agencies in warning of and managing the effects of a tsunami. 

The NSW Tsunami State Plan is available here

A tsunami is a series of waves generated by one of four causes: 

  • Vertical movement of the sea floor as the result of a large earthquake 
  • Submarine or coastal volcanic eruptions 
  • Meteor impacts 
  • Coastal landslides and slumps, either land-based or submarine 

The NSW coast has been affected by over 40 tsunami in the past 200 years but these have been generally too small to be noticed. The largest tsunami to have affected the NSW coast in recent times occurred in May 1960 after a 9.5 magnitude earthquake in Chile. This resulted in a 1 metre tidal fluctuation at Fort Denison in Sydney Harbour, dangerous currents and caused some damage to boats and coastal infrastructure. 

The NSW SES has a new dedicated website with information about staying safe from Tsunami. Click the link to visit the site at tsunamisafe.com.au

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