The remnants of Hurricane Ida battered mid-Atlantic states on Wednesday, with powerful winds and torrential downpour causing major travel disruptions across the region and prompting a flash flood emergency to be issued in New York City for the first time. The National Weather Service (NWS) confirmed at least one tornado and reports on social media showed homes reduced to rubble in Mullica Hill, a southern New Jersey county just outside of Philadelphia. Flooding was also confirmed at Newark Liberty International Airport as the storm moved into New York on Wednesday night. New York Gov. Kathy Hochul declared a state of emergency for the entire state and urged residents to stay at home amid the torrential downpour. “It’s catastrophic levels of water, and we need to keep people off the roads,” the new governor told NY1 shortly after midnight on Thursday. “The subway system is a raging flood in some parts, and it’s a …