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In various locations along Japan's coast, TV footage showed severe flooding,
with dozens of cars, boats and even buildings being carried along by waters.
A large ship swept away by the tsunami rammed directly into a breakwater in
Kesennuma city in Miyagi prefecture, according to footage on public broadcaster NHK.
BuckeyeMike80;1887589; said:The depth of the earthquake was 24 km. That is very shallow.
336 megatons is what an 8.9 magnitude earthquake is equivalent too. The largest Nuclear test ever attempted by the United States was 15 megatons.
EDIT: The B41 nuke was 25MT theoretically, but I don't think it was ever really tested.
Hawaii Civil Defense is advising all residents in tsunami inundation zones to evacuate immediately.
The alert, issued at 10:38, reads "Leave all coastal evacuation zones immediately. Refer to Hawaiian Telcom or Paradise Pages for evacuation maps."
The earliest that hazardous waves could hit Hawaii is 2:59 a.m., said the agency, according to Pacific Tsunami Warning Center, based in Ewa Beach.
A tsunami warning was issued at 9:30 p.m. for Hawaii as a result of a 8.9-magnitude earthquake near the east coast of Honshu, Japan.
The Pacific Tsunami Warning Center issued a tsunami watch at 7:56 p.m. after the quake struck 231 miles northeast of Tokyo. The watch was upgraded to a more serious warning about 9:30 p.m.
"A tsunami has been generated that could cause damage along coastlines of all islands in the state of Hawaii," the agency said. "Urgent action should be taken to protect lives and property."
The warning center said wave heights cannot be predicted, but the first wave may not be the largest.
Chip McCreary, director of the warning center, said the latest forecast models show "wave amplitudes of up to 2 meters (6 feet) beyond normal sea levels in Hawaii.