More than 50 million people across the Northeast and Mid-Atlantic regions are under a severe storm risk. The combination of extreme heat and high humidity poses health risks, particularly for vulnerable populations. Damaging winds could lead to downed trees and power lines, while localized flooding may disrupt travel and infrastructure. Hail and isolated tornadoes are also possible, increasing the potential for property damage. Urban areas, including New York City and Philadelphia, are particularly at risk for flooding due to heavy rainfall. Residents are advised to remain alert and prepared for rapidly changing weather conditions.