Tsunami

A Tsunami is a series of ocean waves that are sometimes generated at the same time as an underwater earthquake. Large underwater landslides can also displace a great deal of water and generate a tsunami. A tsunami wave can race outward in all directions at speeds of up to 800 kilometres an hour and can reach heights of six to nine metres at the shoreline.

ALERT LEVEL THREAT ACTION
Warning Flood wave possible Full evacuation suggested
Advisory Strong currents likely Stay away from the shore
Watch Danger level not yet known Stay alert for more information
Information Statement Minor waves at most No action suggested
 Cancellation Tidal gauges show no wave activity Confirm safety of local areas

How can I prepare myself for a Tsunami?

Check out the Tsunami Portal