Why didn’t they know about the 2004 tsunami?
Many of the hundreds of people who died when a tsunami struck the Indonesian coast Saturday night were nowhere near shelter. Quite simply, they had no idea it was coming. That’s because despite a history of tsunamis caused by volcanoes and earthquakes, Indonesia has not had an effective early warning system for years.
Was there a warning for the 2004 tsunami?
A warning system for the Indian Ocean was prompted by the 2004 Indian Ocean earthquake and resulting tsunami, which left approximately 250,000 people dead or missing. … The only way to effectively mitigate the impact of a tsunami is through an early warning system.
What was the warning time for the 2004 tsunami?
A 7.5 magnitude earthquake occurred just off the island of Sulawesi at 18:03 local time (10:03 GMT) on Friday, triggering dozens of aftershocks. Indonesia’s meteorological and geophysics agency BMKG issued a tsunami warning just after the initial quake, warning of potential waves of 0.5 to three metres.
Who warned about the tsunami and asked to get off the beach?
Tilly Smith (born 1994) is an English woman who has been credited with saving the lives of about 100 beachgoers at Maikhao Beach in Thailand by warning them minutes before the arrival of the tsunami caused by the 2004 Indian Ocean earthquake.
How much warning do you have before a tsunami?
Experts believe that a receding ocean may give people as much as five minutes’ warning to evacuate the area. Remember that a tsunami is a series of waves and that the first wave may not be the most dangerous. The danger from a tsunami can last for several hours after the arrival of the first wave.
How many earthquakes occur before tsunami?
“Earthquakes below 7.5 or 7.0 usually do not trigger tsunamis,” said geophysicist Don Blakeman of the U.S. Geological Survey’s National Earthquake Information Center. “However, sometimes 6.0 earthquakes can trigger local tsunamis, which are smaller and less destructive.”
How did Tilly know it was a tsunami?
Tilly Smith sensed that something was wrong. Her mind kept going back to a geography lesson she had taken in England. She remembered that she had learnt this in class in a video of a tsunami that had hit the Hawaii; an Island in 1946. She knew that tsunami can be caused by earthquakes, volcanoes and landslide.