The remnants of Ida slammed the tri-state Wednesday night with fatal results, producing historic rainfall amounts that left millions under a flash flooding emergency, and triggering multiple tornado warnings throughout the night — including for New York City. Most of New York City is under a Flash Flood Emergency until 11:30 p.m. -- with the National Weather Service urging the 9.1 million at-risk people to seek higher ground. "This is the first time we've ever had to issue one," the National Weather Service office that covers the city tweeted of the emergency declaration.