Powerful quake off Alaska coast

WASHINGTON: A powerful 7.9-magnitude earthquake struck off the coast of Alaska early on Tuesday, sparking tsunami warnings along the Pacific coasts of the US and Canada that were later called off. The quake struck at 12:31 am in the Gulf of Alaska, 280 km southeast of the town of Kodiak, the US Geological Survey said, revising a preliminary estimate of 8.2 magnitude. The epicentre was 10 km under the seabed. The National Tsunami Warning Center did confirm a tsunami, meaning the water levels were slightly above normal.