The estimates from the National Research Council, taking advantage of more recent research, range from 19 to 55 inches. The study is expected to become a common frame of reference that coastal communities can use in planning.
Three towns in Oregon are holding a tsunami drill Thursday. The 2011 tsunami in Japan prompted preparation efforts in Oregon.
Japan’s earthquake and tsunami is alerting the US west coast that the same kind of thing could happen there. Experts who study the earth’s shifting crust say the “big one” may be past due.