Northern Japan hit by M7.5 earthquake, tsunami advisories in effect

A magnitude 7.5 earthquake has struck northern Japan. Tsunami advisories are in effect for the Pacific coastline in northern Japan. Officials have also issued an alert for a potential mega quake in northern Japan. Strong tremors felt across the region The earthquake struck off the eastern coast of Aomori Prefecture at 11:15 p.m. on Monday. The Japan Meteorological Agency has downgraded the magnitude of the quake centered off the Pacific coast in Aomori Prefecture to 7.5 from 7.6. The depth has also been adjusted to 54 kilometers, from an initial estimate of 50 kilometers. Tremors with an intensity of upper 6 on the Japanese intensity scale of 0 to 7 were observed in the city of Hachinohe in Aomori Prefecture. As of 1:00 a.m., six people in Aomori have been injured by either falling down or getting hit by falling objects at their homes. Tsunami warnings downgraded to advisories Authorities had issued a tsunami warning for Iwate Prefecture and parts of Hokkaido and Aomori. At Kuji Port in Iwate, a tsunami measuring 70 centimeters was observed. In Hokkaido, a 50-centimeter tsunami was seen in Urakawa Town and a 40-centimeter tsunami was observed at Mutsuogawara Port.