there were no advanced warnings because this tsunami is believed to have been caused by an underwater landslide triggered by not an earthquake, as indonesia has seen in recent months, but a volcano. specifically crackatou and it is one of the most legendary volcanoes of the 19th century that erupted in 1883 and killed more than 30,000 people and sent up such a big ash cloud that it's believed that world global temperatures plunged as a result. this island sprung up a half a century later and been active in rents mont recent months but scientists believe the tsunami was made worse because there was a full moon saturday night and a high tide. so, again, no warning at all and that is why you see images like