I've read that nothing much happened in Hawaii.
From AP:
HONOLULU — Tsunami waves swamped Hawaii beaches before dawn Friday but didn’t cause any major damage after devastating an earthquake-ravaged Japan and sparking evacuations as far away as the U.S. western coast.
Kauai was the first of the Hawaiian islands hit by the tsunami, the Pacific Tsunami Warning Center said. Water rushed ashore in Honolulu, swamping the beach in Waikiki and surging over a break wall in the world-famous resort but stopping short of the area’s high-rise hotels.
Waves about 7 feet high were recorded on Maui, and 3 feet in Oahu and Kauai. Officials warned that the waves would continue and could become larger, but a scientist at the tsunami warning center said it didn’t appear that they would cause major damage in Hawaii.