NEW YORK—Heavy rain spawned extreme flooding in New York’s Hudson Valley that killed at least one person, swamped roadways, and forced road closures on Sunday night, as much of the rest of the Northeast U.S. braced Monday for potentially punishing rains.
As the storm moved east, the National Weather Service extended flash flood warnings into Connecticut, including the cities of Stamford and Greenwich, before creeping into Massachusetts. Forecasters said some areas could get as much as 5 inches (12 centimeters) of rain.
