Japan's weather agency on Monday issued a tsunami advisory for the Pacific coast of western and eastern Japan after a preliminary magnitude 7.8 earthquake struck off the southern Philippines.
The advisory covers areas stretching from Ibaraki Prefecture near Tokyo to Japan's southernmost island prefecture of Okinawa. A quake struck 26 kilometres southwest of Kablalan in the Philippines on Monday morning at a depth of 55.2 kilometres, according to the US Geological Survey.