The primary risks include life-threatening flash flooding in urban and low-lying areas, minor to moderate river flooding, and potential property damage from severe thunderstorms. Damaging winds could down trees and power lines, leading to power outages. The highest risk areas are northeast New Jersey, New York City, southwest Connecticut, and the lower Hudson Valley. Residents in these regions should remain vigilant, as quick-responding streams and creeks may overflow, impacting adjacent roads and properties.