Tsunami warnings have been issues after a huge 7.5 magnitude earthquake struck off the coast of a Russian island. The US Geological Survey said Wednesday's quake struck 135 miles south-east of Russia's Kuril Islands chain, north of Japan.
The Pacific Tsunami Warning Centre said hazardous tsunami waves were possible within 620 miles of the quake's epicentre. It added earthquakes of this strength in the past have caused tsunamis far from the epicentre, and the US National Tsunami Warning Centre was analysing the event to determine the level of danger.
However, meteorological officials in Japan issued no alerts following the quake, although they said there might be slight tidal changes.
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