A wind chill advisory is in effect though noon Monday for counties to the north and west of Tarrant, the National Weather Service in Fort Worth said Sunday evening.

Wind chills were expected to fall below zero in the affected area, including Parker and Denton counties. Elsewhere in North Texas, wind chills were forecast to be in the single digits and teens.

A winter weather advisory to the south, including Waco and Temple, was set to expire at 9 p.m. Precipitation had moved out of North Texas by dusk, and it was expected to be dry overnight and Monday.

Slick roadways behind a mass of arctic air on Sunday led to more than 100 crashes with injuries around Tarrant County.

The wintry conditions also contributed to other injuries, Medstar ambulance spokesman Matt Zavadsky said.

Between 7 a.m. and 3 p.m. Medstar responded to 118 car crashes with injuries, 21 rollover car crashes, 17 calls for falls on ice and one exposure call.

Fort Worth police spokesman Daniel Segura said there were also scores of smaller crashes that officers could not get to because of the sheer volume.

　

At least two area police officers had close calls. A Fort Worth officer was hit by a sliding car after he slipped fell, but did not require medical attention. And Hurst police posted dashcam video showing one of their officers eluding a sliding car just before it hit the back of a disabled vehicle. That officer was not seriously injured.

At least three of Sunday’s crashes involved fire engines that were out responding to other accidents.

The Union Gospel Mission of Tarrant County, which operates 24 hours a day, was close to its cold-weather capacity of 56 men and 16 women, a representative said. And a few members of the Fort Worth homeless population were trying to go it alone Sunday.

A day after the weather service recorded a trace of snow at Dallas/Fort Worth Airport, the first day of 2018 promises to be a frigid one, with highs well below freezing across DFW.

“And maybe in more of the rural areas the temperatures could feel much lower,” said Patricia Sanchez, a meterologist for the NWS in Fort Worth.

Zavadsky said Medstar be fully staffed with about 45 ambulances.

But he urged residents to go outside only if necessary.

“It’ll be one of the coldest days of the year,” said Zavadsky. “It would be best for residents to enjoy a great day of football on TV on New Year’s Day and stay at home with family until the temperatures rise again.”

The NWS said temperatures will rise as the first week of the New Year progresses with temperatures on Tuesday starting off with lows around 17 and highs in the lower 30s. On Wednesday temperatures will start with lows around 20 and highs in the low 40s.

“However, some areas might still be in the upper teens on Wednesday morning but highs will still top out in the low 40s,” said Sanchez.

Thursday’s weather will start off with lows in the 20s and top out with highs in the low 40s.