Large parts of New York State were waking up on Monday to flooded homes, stranded vehicles, impassable roads and other damage after a storm brought heavy rain on Sunday.

At least one person died, the authorities said. State Senator James Skoufis, who represents Orange County, said that the victim was a woman in her 30s, but the circumstances surrounding her death were still unclear.

The Hudson Valley bore the brunt of the storm, which brought as much as eight inches of rain to some areas, according to the National Weather Service. West Point, the U.S. Military Academy, was hard hit, and much of the road leading up to it was destroyed, according to people documenting the storm on social media.

Other roads were also impassable, including parts of the heavily traveled Palisades Interstate Parkway, and several bridges collapsed, according to Trooper Steven V. Nevel of the New York State Police.

A New York City-bound Amtrak train was halted as it approached Poughkeepsie on Sunday evening, with an Amtrak employee announcing that there had been a “complete washout of both tracks” south of the city, preventing any travel by train.

Gov. Kathy Hochul of New York announced a state of emergency on Sunday, and expanded it later to include more areas of the state. “If you’re in an area impacted by tonight’s storms, please stay off the roads and take steps to stay safe,” she said on Twitter.

Flash flood warnings were in effect early Monday morning, including in Rockland County and northern Westchester County, according to the National Weather Service. The service also forecast more heavy rain that could result in “life-threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses.”

County officials, police departments and other agencies were fielding dozens of emergency calls prompted by flooding on Sunday. Trooper Nevel described the search-and-rescue efforts as an “all hands on deck” endeavor.