@@andreastefanutto2757 コメ主が話しているのはマグニチュードではなく震度のことかと思いますよ。 I think ks-el8cr is talking about the seismic intensity, not magnitude. I live near Fukushima. In 2011 the earthquake magnitude was 9.0 but the seismic intensity in my city was 5-(lower). Still I felt a huge shake and it was powerful enough to damage some of the buildings in my city despite many buildings in here are built with anti-earthquake structure.