Modified Mercalli Intensity Scale

The Modified Mercalli Intensity (MMI) Scale measures the strength of an earthquake based on its observed effects on people, buildings, and the Earth's surface, rather than just ground motion. It ranges from I (not felt) to XII (total destruction). For example, lower levels might be felt only by some people indoors, while higher levels can cause significant structural damage and widespread disruption. The scale helps assess how an earthquake impacts communities, providing a more subjective understanding of its intensity in specific locations depending on factors like building quality and population density.