The Flood Watch affects a wide area, including Philadelphia, Chester, Delaware, Montgomery, and Bucks counties in Pennsylvania; Camden, Gloucester, Mercer, Burlington, and Hunterdon counties in New Jersey; and New Castle County in Delaware. The heavy rainfall could lead to flash flooding, particularly in urban areas and locations with poor drainage. Residents near rivers, streams, and low-lying areas are at heightened risk. The NWS has advised monitoring updates and being prepared to act if Flash Flood Warnings are issued. Travel disruptions and localized flooding are likely during the storm's peak hours.