NWS TsunamiReady® ProgramThe 2004 Indian Ocean tsunami, the 2009 Samoa tsunami, the 2010 Chile tsunami, the 2011 Tohoku, Japan tsunami: In less than 10 years, these four events focused the world's attention on the infrequent but very real threat of tsunamis. Major tsunamis do not happen often, but when they do, they can have a significant impact on life and property. Even small tsunamis, which are more common, can cause loss of life, injuries and considerable damage.