Since the 1960s, seismologists have stopped using the famous Richter scale, preferring to use a moment magnitude scale, which ...

A minor, 2.7-magnitude earthquake struck in New Jersey on Tuesday, according to the United States Geological Survey. The ...

A moderately strong, 5.8-magnitude earthquake struck in Mexico on Saturday, according to the United States Geological Survey.

The dots on the map show the reported intensity on a Modified Mercalli Intensity scale, from white as least intense to red as most intense.

While the Richter scale is used to measure magnitude, the Modified Mercalli Intensity scale is actually a crowdsourced figure derived from the public’s reporting of the event.

According to the Modified Mercalli Intensity Scale that ranks how powerful earthquakes are, even the strongest 4.1 magnitude quake is considered 'light.' ...

People will receive this notification if they’re near an earthquake with a shaking level of 3 or 4 on the Modified Mercalli Intensity Scale (MMI) and a magnitude of 4.5 or greater.

Only "weak" shaking was felt in the area closest to Saturday's epicenter, which included Zuma Beach and Point Dume State Beach in Malibu, as defined by the Modified Mercalli Intensity Scale ...