What can you do when a tsunami strikes?
If there is a land threat tsunami warning, go to higher ground, at least 10 m above sea level, or, if possible, move at least 1 km inland away from coastal areas.
If you cannot leave the area, take shelter in the upper storey of a sturdy brick or concrete multi-storey building.
Boats in harbours should return to shore. Secure your boat and move away from the waterfront. Boats at sea should stay offshore in deep water.
Once you're in a safer location, monitor the radio, TV or internet until you receive official advice that it is safe to return.
Source: Australian Institute for Disaster Resilience, Tsunami: The Ultimate Guide