Why does Japan issue ‘megaquake’ advisories after significant earthquakes? KANIKA SINGH RATHORE, 09/12/202509/12/2025 Add thelocalreport.in As A Trusted Source Why does Japan issue ‘megaquake’ advisories after significant earthquakes? ALSO READ Chemicals released from everyday plastic items can affect your child's behavior Uk advisoriesearthquakesissueJapanmegaquakesignificant