The remnants of Hurricane Ida dumped flooding rain, spawned tornadoes across the Northeast and caused at least 21 fatalities in the region, with the death toll expected to rise. A flash flood emergency was declared in New York City for the first time on Wednesday, with commuters from across the city sharing videos online of conditions as subway stations were turned into waterfalls and Midtown streets became rivers. New aerial footage also shows heavily damaged homes in Mullica Hill, New Jersey a