Magnitude 8.2 quake off Alaska prompts tsunami warning

An earthquake of magnitude 8.2 hit 256 km (157 miles) southeast of Chiniak, Alaska at a depth of 10 km at 0931 GMT on Tuesday, the US Geological Survey said.

The quake prompted a tsunami warning for parts of Alaska and Canada and a tsunami watch for the entire US west coast, the US Tsunami Warning System said.