Heat Wave in New York: Nearly 50,000 Con Edison Customers Lose Power

[What you need to know to start the day: Get New York Today in your inbox.]

At least 50,000 customers were without power in New York City and Westchester County on Sunday night as the third day of dangerously hot weather continued to grip the region, officials said.

That included 30,000 customers in Brooklyn — in and around the neighborhoods of Canarsie, Mill Basin and Flatbush — who had their power turned off so Con Edison could make necessary repairs to “prevent a bigger outage,” Mayor Bill de Blasio said on Twitter.

A spokesman for Con Ed, Bob McGee, said the affected area of the shut-off is bounded by Kings Highway and Ditmas Avenue on the north; Belt Parkway and the Marine Parkway Bridge on the south; East 108th Street on the east; and Flatbush Avenue on the west.

“Con Edison advises customers in the affected areas to switch off or unplug electrical appliances to avoid potential damage to the appliances when power is restored,” the utility company said in the statement.

Mr. McGee said that overhead lines supplying the area were in danger of overloading as a result of the heat, and that the shutdown was meant to prevent damage.

According to its power failure map, many Con Edison customers in Queens and Brooklyn could be without power until Monday morning.

“It is the third day of the heat wave, so the system is really baking at this point,” said Alfonso Quiroz, a spokesman for Con Edison.

P.S.E.G. Long Island had wrestled with its own power failure on Saturday night that left thousands without power in the Rockaways.

By Sunday night, both companies were asking customers across neighborhoods in Brooklyn and Queens to limit the use of electrical appliances. Con Edison said it had reduced voltage by 8 percent in affected areas to protect equipment and maintain service as repairs were made.

“Because the heat is still so heavy today, if customers could alleviate some of the stress to the system it would help over all,” said Elizabeth Flagler, a P.S.E.G. Long Island spokeswoman.

Mr. Quiroz said Con Edison had hit “record-high power demand” for a weekend.

Mr. de Blasio also said on Sunday night that the city had sent emergency crews to aid a nursing home that was using generator power and two adult care facilities that had no power.

Fire officials said the soaring temperatures also may have contributed to a Queens fire that killed a mother and daughter.

With temperatures over 90 degrees by 8 a.m., about 100 firefighters fought the heat and the flames Sunday morning as a blaze tore through a house in Richmond Hill, Queens, killing a mother and her 7-year-old daughter, and critically injuring the woman’s two teenage sons. Fire Department officials said they were investigating whether the fire was linked to the family’s air-conditioner, which neighbors said was located on the first floor.

The police said Silvia Umana, 51, lived in the home with her daughter, Lupe Perez, and two sons, whom neighbors identified as Gilbert, 19, and Gabriel, 15. The younger boy escaped out a second-story window and was rescued by firefighters.

“They always complained about how hot their house was,” said Tiffany Elahie, 14, a friend of the children who lived a few doors away.

It was a tragic coda to a sweltering heat wave that began on Friday, with temperatures that hovered consistently in the mid-90s. In some neighborhoods, the heat index was more than a dozen degrees higher.

New York fire officials said they had expanded emergency service crews in anticipation of a surge in calls, and since Friday had responded to more than 230 heat-related incidents, the majority involving older patients.

New York, like much of the country, has been struggling under intense heat, pushing officials in the city to declare a state of emergency. Meteorologists have issued extreme heat advisories stretching from the East Coast through the panhandle of Texas and the Midwest.

Halfway up that Northeast corridor, the heat delayed a Greyhound bus traveling on Sunday morning to New York from Boston. Matt Joyal, a passenger, said that customers were stuck waiting on the side of the highway for a replacement bus, which he said they were told would take two to three hours to arrive.

A handful of New Yorkers did emerge on Sunday morning to take advantage of the relatively cooler morning temperatures, with handball and slow-pitch softball games carrying on in Brooklyn. Wilfredo Perez, 29, ran ice cubes across his hands between games at handball courts in Coney Island. “The heat doesn’t bother me,” Mr. Perez said. “It actually makes the ball bounce better.”

As the heat wave stretched into a third day, even law enforcement agencies were losing patience. The New York Police Department said on Twitter that “Sunday has been canceled,” and in Braintree, Mass., the police requested that anyone thinking of committing a crime wait until Monday, when it was expected to cool down.

“We are asking anyone thinking of doing criminal activity to hold off until Monday. It is straight up hot as soccer balls out there,” the Braintree Police Department said in a now-viral Facebook post.

New York City’s Department of Correction said it had received at least 13 heat-related complaints over the weekend. Latima Johnson, a spokeswoman for the department, was unable to say how high temperatures had reached inside the city’s jail facilities.

The 311 system, however, had received 162 heat-related complaints about the city’s jails, including 94 on Saturday. William Reda, a 311 spokesman, said the system does not track whether calls come from an inmate or a relative.

One bodega owner lamented his struggle to keep ice in stock, and said he had not figured out how to keep his water bottles cool.

“We stocked up on ice again last night, and after two hours today, we ran out,” said Kenny Cheng, 40, who runs a corner shop called James Market in Manhattan’s Chinatown. “People bought it all up.”

Glimpses of a more innocent New York surfaced as residents without air-conditioning poured into the streets. They queued up in long lines for community swimming pools, played in the water shooting from fire hydrants and sought shade wherever they could find it.

Dream Harris was among the young opportunists.

“Ice-cold water! One dollar!” Dream, 7, shouted on Saturday afternoon from the corner of 152nd Street and Morningside Avenue in Harlem. Supervised by her mother, she had made $30 in an hour.

She planned to keep working until she was out of water. At that point, the plan was to dash through the sprinklers in St. Nicholas Park, pick up some more bottles and get back to work.

Rebecca Liebson, Derek Norman, Ashley Southall, Jan Ransom, Rick Rojas, Sean Piccoli, John Surico and Jacey Fortin contributed reporting.