Hawaiians braced for an expected tsunami from a giant earthquake off the coast of Chile, as officials in the state evacuated thousands of residents and tourists to higher ground. The tsunami-warning center’s models, based on readings from sensors, are predicting “very rough waves” from six to 10 feet high by the time the tsunami hits Hawaii at about 11:00 a.m. local time, Mr. Hirshorn [cq] said. Any major tsunami waves could be damaging, he said, because “the don’t crash on the beach. They streamroll in and they streamroll out.”