By JOHNNY DÍAZ and FRANCESCA REGALADO A powerful 6.8 magnitude earthquake struck southwestern Japan on Tuesday afternoon, killing 13 people and injuring dozens of others, damaging buildings and homes, igniting fires and prompting a search for people who may have been trapped in rubble. Here’s what to know. Where did the earthquake happen? The earthquake hit around 4:30 p.m. local time in Kumamoto prefecture on Kyushu island, the southernmost of Japan’s main islands. The earthquake’s intensity…
