Small earthquake detected in Morris County, New Jersey

A small earthquake was detected in Morris County, New Jersey, on Saturday, officials say.

The 1.1-magnitude quake happened at 7:50 p.m. just over 3 miles southwest of Chester, according to the United States Geological Survey. It originated about 7 miles underground, the USGS says.

It's unclear at this time if it caused any damage.

There have been eight earthquakes detected in New Jersey so far this year, according to the USGS.

The strongest was a 2.4-magnitude quake that hit about 3 miles outside of Bedminster in Somerset County on Jan. 30. The weakest was a 1.0-magnitude earthquake on April 23. That quake was also located about 3 miles outside of Bedminster.

Three earthquakes happened in Somerset County, three happened in Hunterdon County, and two happened in Morris County.

There have also been two earthquakes in Westchester County, New York, this year – a 2.2-magnitude earthquake near Elmsford in March and a 1.5-magnitude earthquake near Purchase in June.

The Ramapo Fault line – which runs through Pennsylvania, New Jersey and New York – produces a number of earthquakes each year. Those earthquakes are typically small, measuring low on the Richter Scale.