After hitting Louisiana as a Category 4 hurricane, Ida wrecked the Northeast with outbreaks of severe weather and flooding rainfall. Flash flooding occurred in densely populated areas like Philadelphia and New York, and it caused significant highways to be under feet of water. Floodwaters also swept apartments and homes of locals in these areas. Tornadoes and other severe weather events also struck New Jersey. Flooding due to Ida was exaggerated because the regions that were the hardest hit also endured heavy rain from Tropical Storm Henri. Watch the video.