Earthquake magnitudes are determined by seismometers, which record the vibrations that travel through the earth. RELATED: Delaware hit by at least 59 earthquakes since 1871 They are very sensitive ...

It seems the safety analysis, and the earthquake predictions, were done by Holtec before the shale-oil revolution took off in the Delaware basin. In fact, one Holtec graphic of earthquake ...

Aftershocks continue to affect the region after Friday's 4.8 magnitude earthquake in New Jersey, which was felt across the East Coast, including in Delaware. The initial quake occurred about 4.3 ...

SEATTLE — A magnitude 3.4 earthquake struck near Auburn Saturday morning with reports of it being felt in Tacoma and Seattle.

A magnitude 5.0 earthquake struck West Texas near Pecos, marking one of the strongest quakes in Texas history.

The earthquake, which struck just after 10 a.m., was centered about 6 miles southeast of York Harbor. Its effects were felt as far north as Bangor and south as New York City. Alex de Steiguer was ...