Coastal communities from New Jersey to New England faced another day of flooding Sunday as a powerful, slow-moving nor’easter pushed seawater into low-lying neighborhoods and knocked out power to more than 100,000 customers across the Northeast and mid-Atlantic at times. In Sea Bright, New Jersey, each high tide brought more water into the town. Caroline Virenius said about a foot of water filled her garage. “It’s not like a one-time occurrence,” she said. “It’s getting wet again and again.” The storm brought more than 4 inches of rain to some parts of New Jersey since Friday. On Long Island, wind gusts brought down trees and utility poles and damaged homes. A New York City Housing Authority worker died Saturday after a tree fell, according to reports from the storm. The National Weather Service expected the system to weaken Sunday night, but warned that coastal flooding could persist through high-tide cycles. Local officials in New Jersey and New York cautioned that Monday’s late high tide could bring additional flooding. Nassau County Executive Bruce Blakeman said another, weaker band of the storm could move through Sunday afternoon and evening. In North Beach Haven, New Jersey, shop owner Carole Ann Palmer said the flooding was the worst she had seen in a decade. The storm swept away the front step of her bait-and-tackle shop, and neighbors used kayaks to travel flooded streets. Palmer said she had to wear waders and carry her puppies to dry ground so they could go outside. Floodwater also covered streets in Howard Beach, Queens, while winds reaching 40 mph contributed to major travel disruptions. More than 250 flights had been canceled at Boston Logan International Airport by late Sunday morning, according to the Massachusetts Port Authority. Cancellations and delays affected airports along the coast. The storm recalled Superstorm Sandy, which caused more than $60 billion in damage across the eastern United States in 2012, though officials said this storm’s effects were far less severe. In Sea Bright, where Sandy devastated the community, resident Bernard Dowd said updated rules requiring homes to be elevated helped limit the damage. He found his basement filled with water after work and said neighbors’ sandbags appeared to offer added protection. Forecasters said an El Niño pattern could contribute to several nor’easters along the East Coast this fall. Waves hitting seawalls and beaches also raised concerns about coastal erosion as residents continued to contend with repeated high-water cycles.