About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are strong enough ...

Earthquakes and seismic activity often happen with sudden movements underground with tectonic plates. Seismographs are used by scientists to measure the time, location and strength of an earthquake.

A strong, 6.5-magnitude earthquake struck in Mexico on Friday, according to the United States Geological Survey. The temblor ...

The intensity of an earthquake is often measured using the Japanese seismic intensity scale, which categorizes tremors from 1 to 7. In this case, the earthquake was classified as a level 3, indicating ...

SOMONAUK - At 2:53 A.M. a 3.4 magnitude earthquake, originating about 1.2 miles northwest from the Village of Somonauk, shook communities in south Dekalb county. On their earthquake intensity scale, ...