>A magnitude 7.9 earthquake hit the Gulf of Alaska in the early hours of Tuesday, prompting warnings of a possible tsunami down the Canadian and U.S. west coast and as far away as Hawaii. >Local radio on the Alaskan island of Kodiak, close to the epicenter, urged listeners to move away from coastal areas. >"This is a tsunami warning. this is not a drill. Please get out to higher ground," said the announcer on KMXT public radio. "If you are on the flats, get up on one of the hills … Just go high." >A tsunami watch for the entire U.S. west coast and Hawaii were issued. >"Based on all available data a tsunami may have been generated by this earthquake that could be destructive on coastal areas even far from the epicenter," the Pacific Tsunami Warning Center said. >If a tsunami is generated, it could reach Hawaii by 4:23 a.m. (1423 GMT) at the earliest, it added.