The heavy rainfall poses a significant risk of flash flooding across New York City, particularly in areas already impacted by recent storms. Residents in basement apartments are at heightened risk and are advised to have an evacuation plan. Commuters may face hazardous travel conditions, including flooded roads and underpasses. Standing water can conceal dangerous currents, open manholes, or submerged debris, increasing the risk of injury. Local drainage systems may become overwhelmed, leading to localized flooding in vulnerable areas.