A tsunami has been observed for the first time on radar , an oceanographer says . That was the March 11 tsunami that devastated Japan . East Coast already has a high-frequency radar system for the ocean . The West Coast , parts of the Japan East Coast would have to build radar systems from scratch .
A tsunami has been observed for the first time on radar , an oceanographer says . That was the March 11 tsunami that devastated Japan . The West Coast already has a high-frequency radar system for the ocean . Southeast Asia , parts of the U.S. East Coast would have to build radar systems from scratch .