Japan rocked by ANOTHER earthquake amid catastrophic ‘megaquake’ alert days after 7.5-mag trembler sparked tsunami panic

A MEGA 5.7 magnitude tremor has struck Hokkaido, Japan, only days after another quake threatened massive 10ft tsunami waves. Japan’s weather agency issued its first-ever megaquake warning in the north of the country after a horrific magnitude 7.5 earthquake earlier this week. Today’s quake had a relatively shallow depth of just 22 miles, meaning the…