The severe weather poses risks to millions across the Northeast. Damaging winds could lead to downed trees and power lines, while heavy rainfall may result in localized flooding. The threat of hail and isolated tornadoes adds to the potential hazards. Urban areas, including New York City, Philadelphia, and Washington, D.C., are particularly vulnerable due to high population density. The heat advisory in New York City highlights the danger of extreme heat, which can cause heat-related illnesses, especially for vulnerable populations such as the elderly and those without access to air conditioning. Travelers and outdoor event attendees should remain cautious.