Another bout of rain will fall on the already-soaked Northeast on Friday, threatening to trigger disruptive and damaging coastal flooding in several of the region's major cities through Saturday.
More than 7 million people are under coastal flood warnings along swaths of the Northeast, including residents of Philadelphia and parts of New York, where Nassau and Suffolk Counties could be overwhelmed with up to 3 feet of coastline flooding.
"This will result in extensive road closures and flooding of low-lying property including parking lots, parks, lawns and first floors and basements of homes/businesses near the waterfront," the National Weather Service in New York warned. "Vehicles parked in vulnerable areas near the waterfront will likely become flooded and/or submerged."
In New York City, where a coastal advisory is in place, 1 to 2 feet of water could inundate ground-level areas.
About 35 million people -- stretching from North Carolina to eastern Massachusetts -- are under flood watches Friday as the storm pushes through the eastern US.