The largest earthquake to hit the New York area in more than a century was felt by as many as 42.8 million people across the US East Coast on Friday, according to estimates from the United States Geological Survey.

The shakes from the 4.8-magnitude quake billowed out from the epicenter of Whitehouse Station, New Jersey, a small community about 50 miles (80 km) from New York City. An aftershock was reported around 6 p.m. local time. Initial indications suggested a 4.0-magnitude quake southwest of Gladstone, New Jersey, according to the USGS.