A strong 7.1-magnitude earthquake hit southwestern Japan on Tuesday, the Japan Meteorological Agency said, issuing a tsunami alert. The tremor at 4.27pm on the island of Kyushu also measured at the highest possible level seven on Japan’s own Shindo scale of shaking, the agency said. The tsunami could measure up to one metre and arrive at around 5pm, it said. Broadcaster NHK said that waves of up to that level may already have been recorded. A quake with a magnitude of 7.2 hit northern Japan on...