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Good ice-cold Friday to you. The mercury is in the teens. The wind chill is near zero.

Records are falling. And more snow is coming.

This winter has been one of the 20 coldest recorded in New York City, and there are many people without homes.

On Tuesday, the city updated its count of the homeless in shelters: 52,261 (29,747 adults and 22,514 children).

And, at last count, the number of homeless people on the streets and subways was 3,180, officials said.

The annual four-weekend program, “Don’t Walk By,” which ends this weekend, sends volunteers to walk every block of Manhattan, engaging the homeless.

Those who want a hot meal are shuttled by van to a church, where they can meet with social workers and medical professionals.

In the last three weekends, volunteers talked to 652 homeless people; 477 agreed to a meal.

“For folks on the street, this has been one of the toughest winters in memory,” said James Winans, of the Bowery Mission, one of five organizations behind the walk.

Many days this winter, the mission has hosted as many as 300 people for meals and 200 overnight.

“We’ve never seen numbers like that,” Mr. Winans said. “After Sandy we had 160 staying overnight, and we thought that was a lot.”

Here’s what else you need to know for Friday and the weekend.

WEATHER

Penetrating, head-down cold. This morning’s lows of 10 degrees at La Guardia Airport and 11 at Kennedy broke records.

A high of 18 today — the lowest maximum for this date — with wind chills in the single digits and ample, pointless sunshine.

A day of respite tomorrow, with a high of 35 (only 10 degrees below normal).

Then: major snowstorm, Sunday into Monday, potentially eight inches or more.

COMMUTE

Subways: Delays on the 2, 3, 4, D, F, L and M. Check latest status.

Rails: Metro-North Danbury Branch replaced by shuttle bus. Problems on L.I.R.R. trains through Patchogue. Check L.I.R.R., Metro-North or N.J. Transit status.

Roads: Inbound 40-minute delays at G.W.B. upper level. Check traffic map or radio report on the 1s or the 8s.

Alternate-side parking is in effect.

Weekend Travel Hassles: Check subway disruptions or list of street closings.

COMING UP TODAY

• The City Council takes up a proposal to hang a historical sign on Wall Street at the site of an 18th-century slave market. 10 a.m.

• Mayor de Blasio speaks at the police promotion ceremony at 11 a.m.

• Students in East Harlem release balloons at 2:30 p.m. on the second anniversary of the death of a first grader hit by a truck on his way to school.

• Theater on skates at Bryant Park: “Fire & Ice: The Rise & Fall of the Norse Gods,” with the Frozen Feet Theater. 1 p.m. [Free]

• A show of Amy Arbus’s 1980s street photos opens at Leica Gallery in SoHo. (The Times’s Lens blog has excerpts.) [Free]

• A nighttime gallery tour of Bushwick, “Beat Nite,” followed by a big after-party. 6 p.m. onward. [Free]

• “Blacks in Experimental Film” features clips and shorts going back to 1914, at Maysles Cinema in Harlem. 8 p.m. [$10]

• The Times’s Weekend Miser recommends “La Bohème” at LoftOpera in East Williamsburg. 9 p.m. [$20]

IN THE NEWS

• Kerry Kennedy was found not guilty of driving while impaired. [New York Times]

• A Roman sculpture of a reclining woman, stored in a Queens warehouse, may have been looted from Italy decades ago. Federal agents are seizing it. [New York Times]

• Before the George Washington Bridge lane closings, aides to Gov. Chris Christie joked about causing traffic jams in front of the home of a prominent rabbi. [New York Times]

• The mayor may be boycotting, but Police Commissioner William Bratton plans to march in the St. Patrick’s Day parade. [Daily News]

• The city has issued 11,597 tickets for failure to shovel snow so far this year, more than double last year’s total. [International Business Times]

• Mayor de Blasio is blocking three charter schools from moving into public school buildings. [New York Times]

• The celebrated Hell’s Kitchen vegan food stand Cinnamon Snail is the fourth most popular restaurant in the country — on Yelp. (Sal, Kris and Charlie’s Deli in Astoria is No. 28.) [via Gizmodo]

• Scoreboard: Heat scorch Knicks, 108-82. Nets crush Nuggets, 112-89. Hockey returns: Rangers top Blackhawks, 2-1. Devils over Blue Jackets, 5-2. Islanders beat Maple Leafs in overtime, 5-4.

THE WEEKEND

Saturday

• Closing weekend for the “Venetian Glass” show at the Met. [Free, $25 suggested]

• Readings from Ralph Ellison’s “Invisible Man,” with music, on Ellison’s centennial, at the Schomburg Center in Harlem. 10 a.m. to 5 p.m. [Free]

• Meet and greet turtles at Inwood Hill Park, with a wildlife rehabilitator. 2 p.m. [Free]

• The Argentine singer-songwriter Sofía Rei plays the Jamaica Performing Arts Center. 7 p.m. [Free]

• First Saturday at the Brooklyn Museum features music, performances and talks by female artists. 5 p.m. to 10 p.m. [Free]

Sunday

• Members of the Vienna Philharmonic Orchestra play Austrian works written during World War I at the Austrian Cultural Forum on the East Side. 11 a.m. [Free]

• Thumb through old vinyl at the Celloct-I-Bowl Record Show at Brooklyn Bowl in Williamsburg. Noon to 5 p.m. [Free]

• Learn to be a citizen frog monitor and help protect embattled amphibians at High Rock Park in Staten Island. 2 p.m. [Free]

• Last day to skate in Bryant Park. That means winter’s almost over, right?

• For more events, see The New York Times Arts & Entertainment guide.

• And if you’re looking for something fun to do and see outside New York City, The Times’s Metropolitan section has suggestions for Westchester, Long Island, New Jersey and Connecticut.

AND FINALLY …

Isabella Goodwin was a much-lauded police matron with the city’s Police Department, a thorn in the side of fortune tellers and quack healers.

But as a police matron, she was a second-class official, lacking the power to arrest.

Then came the Trinity Place taxicab heist of 1912. Two messengers on their way to a bank were robbed of $25,000.

One newly rich robber bought a fancy hat for his girlfriend. The girlfriend bragged about it.

Matron Goodwin, a quiet, kind-faced woman, befriended her and helped crack the case.

And so on this date in 1912, Isabella Goodwin was promoted. She became the city’s first female detective.

Joseph Burgess contributed reporting.

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