If the earthquake triggered memories of last year's big shake there are some key differences. Last year's earthquake centered near Tewksbury, New Jersey, was a magnitude 4.8. That's almost 20 times stronger than Saturday night's earthquake.

A magnitude 3.0 earthquake centered in New Jersey briefly shook NYC Saturday night, prompting emergency guidance but no major damage.

A minor, 3.0-magnitude earthquake struck in New Jersey on Saturday, according to the United States Geological Survey. The temblor happened at 10:18 p.m. Eastern about 0 miles northeast of Hasbrouck Heights, N.J., data from the agency shows.