Tsunami warning as it happened: Threat to US and Canada ebbs away after earthquake sparks panic

Much of the west coast of the US was woken by the threat of a huge tsunami overnight. But the panic soon subsided after all warnings were eventually withdrawn

Alaska and other parts of North America were bracing itself for disaster after a huge 7.9-magnitude earthquake struck at a shallow depth some 160 miles off the state's coast.

While alerts were originally issued across the entire west coast of America and Canada, they have since been withdrawn for all states. That was after people were told to head to high ground and get safe amid fears the tsunami could cause serious damage.

The US Geological Survey said the quake struck 256 km (157 miles) southeast of Chiniak, Alaska at a depth of 10 km at 0931 GMT on Tuesday morning.

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