The severe weather poses significant risks to millions of residents across the Northeast. The primary threats include damaging wind gusts, large hail, and localized flooding due to heavy rainfall. Urban areas such as New York City, Washington, D.C., and Philadelphia are particularly vulnerable to flash flooding and wind damage. Coastal regions near Lake Erie and Lake Ontario may experience hazardous conditions due to strong wind gusts reaching up to 55 mph. The combination of heavy rain and thunderstorms could disrupt travel, damage property, and create dangerous conditions for outdoor activities.