The slow-rolling system named Henri is taking its time drenching the Northeast with rain, lingering early Monday atop a region made swampy by the storm’s relentless downpour.

Henri, which made landfall as a tropical storm Sunday afternoon in Rhode Island, has moved northwest through Connecticut. It hurled rain westward far before its arrival, flooding areas as far southwest as New Jersey before pelting northeast Pennsylvania, even as it took on tropical depression status.

Over 140,000 homes lost power, and deluges of rain closed bridges swamped roads, and left some people stranded in their vehicles.

Beach towns from the Hamptons on Long Island to Cape Cod in Massachusetts exhaled from being spared the worst of the potential damage Sunday. Other areas of New England awaited the storm’s return.

The National Hurricane Center said Henri is expected to slow down further and likely stall near the Connecticut-New York state line, before moving back east through New England and eventually pushing out to the Atlantic Ocean.

Henri could produce 3 to 6 inches (8 to 15 centimeters) of rainfall over portions of Long Island, New England, southeast New York, New Jersey, and northeast Pennsylvania through Monday, the agency projects. Parts of northern New Jersey into southern New York could see up to a foot of rain, leading to considerable flash flooding, it said.

New England officials fretted that just a few more inches of precipitation would be a backbreaker following a summer of record rainfall.

“The ground is so saturated that it can flood with just another inch of rain,” Connecticut Gov. Ned Lamont warned late Sunday.

In the central New Jersey community of Helmetta, some 200 residents fled for higher ground, taking refuge in hotels or with friends and family, as floodwaters inundated their homes Sunday.

“It came so quick — in the blink of an eye,” said the town’s mayor, Christopher Slavicek, whose parents were spending the night after fleeing their home. “Now there’s clean up. So this is far from over.”

President Joe Biden has declared disasters in Massachusetts, Rhode Island, and Connecticut, opening the purse strings for federal recovery aid to those states.

“We’re doing everything we can now to help those states prepare, respond and recover,” said the president, who also offered condolences Sunday to Tennessee residents, after severe flooding from an unrelated storm killed at least 22 people and left dozens missing.