The Mercalli Intensity Scale

The Mercalli Intensity Scale measures the effects of an earthquake on people, buildings, and the Earth's surface, based on observations rather than scientific instruments. It describes how strong an earthquake feels and the damage it causes, rating from I (not felt) to XII (total destruction). For example, lower levels might involve just a gentle shaking, while higher levels can cause severe damage and changes to the landscape. This scale helps assess an earthquake's impact locally, providing valuable information for emergency response and understanding the event's severity in specific areas.