Major quake hits region of Okhotsk Sea 13 minutes ago A major earthquake with a magnitude of 7.5 hit the region of the Sea of Okhotsk early Saturday, the US Geological Survey said, but no casualties were reported. The epicentre of the quake, at a depth of 605 kilometres, was said to be 384 kilometres (239 miles) west-northwest of the Russian far eastern city of Petropavlovsk-Kamchatskiy. It occurred at 0212 GMT, the USGS said