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As a general guideline, the time between the actual earthquake and the time the tsunami arrives is on the order of minutes to hours. Tsunamis out in the deep ocean travel very fast -- around 500 mph -- which means that they cross ocean basins in about as much time as it takes a plane to fly across. So an earthquake in Japan gives Hawaii and the US West Coast ...


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Norfolk Island experienced a tsunami wave 64 cm tall. In Australia the tsunami wave was 10 cm at Tweed Heads and 9 cm at Port Kembla. In Vanuatu the height was 32 cm and in Fiji 13 cm and 8 cm in Tonga. Australian Burea of Meteorology report TSUNAMI DETAILS: The following sea level gauges have observed a tsunami, heights refer to wave amplitudes (positive ...


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