By Jennifer Peltz And Mike Catalini THE ASSOCIATED PRESS NEW YORK (AP)- An earthquake shook the densely populated New York City metropolitan area Friday morning, with residents across the Northeast reporting rumbling in a region unaccustomed to it. The U.S. Geological Survey reported a quake at 10:23 a.m. with a preliminary magnitude of 4.8, centered near Whitehouse Station, New Jersey, or about 45 miles west of New York City and 50 miles north of Philadelphia. The agency’s figures indicated that the quake might have been felt by more than 42 million people. People from Baltimore to the Massachusetts-New Hampshire border reported feeling the ground shake. While there were no immediate reports of serious damage, officials were checking bridges and other major infrastructure, Amtrak slowed trains throughout the busy Northeast Corridor,…