650 metres (or meters) equals about 1900 feet high, which is a wave a third of mile high hitting the East Coast. The Empire State Building is only 1/4 of a mile high. It would travel 20 kilometers inland, or 12 miles from the ocean.
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I hope I'm at home when it happens. If I'm at work I'll be dead, but if I'm at home I should have easy beach access :)