Wave Height (Score 5, Informative)

that will sweep across the Atlantic that will still be anything from 60 to 150 ft high when it hits the U.S. Eastern seaboard

I heard an interview with someone from NOAA with the Pacific Marine Environmental Laboratory in Seatle that described what happens when a Tsunami occurs. He said when the wave travels through deep water it has tremendous speed (hundreds of mile/hour) but is only a few feet high. As it comes into shallow water the wave slows down to 10s of miles/hour and that causes the huge wall of water. So a Tsunami is not really a 100 ft wave as it travels through the ocean only once it nears land.

Just my $.02.