How many aftershocks in NY, NJ since 4.8-magnitude quake?

NEW YORK CITY (PIX11) -- New Jersey residents still feel the effects of a 4.8-magnitude earthquake that hit the region on Friday and rattled New York City. Over 31 aftershocks have occurred since the 4.8 earthquake struck near Califon, New Jersey, roughly 60 miles west of New York City, at 10:23 a.m., according to the United [...]