Japans revised Earthquake Intensity Scale, which is used as a companion to the Richter Scales, clarified what you can expect from various earthquake intensities.
Rating | Effects |
1.0 - 1.9 | Some feel trembling. |
2.0 - 2.9 | Many feel trembling. Suspended lights sway. |
3.0 - 3.9 | Some feel frightened. Dishes rattle. |
4.0 - 4.9 | Those asleep are awakened. Some items fall off shelves. |
5.0 - 5.4 | Some seek shelter. Dishes and books fall. |
5.5 - 5.9 | Many frightened. Some free-standing objects tip over. |
6.0 - 6.4 | Cant stand still. Many windows break. |
6.5 - 6.9 | Can only crawl. Some brick walls crumble, doors come off. |
7.0 - 7.9 | People and furniture thrown about. |
8.0 - 8.9 | Earthquake-proof buildings suffer damage. |
9.0 - 9.9 | Total destruction. |