Japan Earthquake | Around 30 People Injured, All Tsunami Warnings Lifted As 7.5 Quake Hits Japan About 30 people were injured and 90,000 residents had to leave their homes after a powerful 7.5-magnitude earthquake struck northern Japan on Monday and triggered a tsunami towards Pacific coast areas. The Japan Meteorological Agency said a tsunami as high as 3 metres (10 feet) could reach the country's northeastern shoreline. By early Tuesday, the JMA reduced the warnings to advisories and later removed all advisories.