Storm Jonas' Victims: Mom and Baby Son Die in Car, Pregnant Teen Collapses After Shoveling Snow

A 23-year-old mom and her son were killed when their snow-covered car filled with carbon monoxide, while a pregnant 18-year-old died after shoveling snow.

A 23-year-old New Jersey woman and her young son were killed when their snow-covered, running car filled with carbon monoxide during the weekend blizzard, officials said.

Sashalynn Rosa and her year-old son Messiah were among at least 37 people who died as a result of the nearly record-breaking storm, which hit the east coast with more than 29 inches in Baltimore and 26.8 inches in New York City, the Associated Press reported.

The mom was sitting inside her Mazda with her son and three-year-old daughter while the children’s father reportedly shoveled out the car in Passaic on Saturday.

The family was unaware that the tailpipe was covered in snow as the car was being dug out, leaving the odorless gas nowhere to go but inside the vehicle, police said.

The group was found passed out inside the car about 8:11 p.m. and emergency responders were already performing CPR on the three when police arrived on the scene.

They were rushed to Saint Mary’s Hospital in Passaic, but Rosa and her son were unable to be saved.

Read: Frozen in Time: 7 of the Worst Blizzards To Ever Hit America

The three-year-old girl was taken to a second hospital, Saint Joseph Hospital in Paterson, N.J., and was still listed in very critical condition on Monday, officials said.

Devastated family members mourned the loss of Rosa and her son while also holding on to the hope that her daughter would recover.

“I’m so sorry for your loss cuz. You have to be strong for you and your daughter,” one person wrote on Rosa’s boyfriend’s Facebook page.  

“Just knowing that my cousin and her son aren't in this world anymore just breaks my heart. All prayers for her daughter that's still fighting in the hospital… and having the lord have two more beautiful angels,” another relative wrote.

Three additional people in Pennsylvania and South Carolina died from carbon monoxide poisoning—including one man who died after his car was buried in snow by a passing plow, officials said.

Investigators reportedly believe David Perrotto, 56, was in his car either taking a break from digging it out or was trying to get out of the parking space when a snow plow went by and buried the car.

Another person trying to dig out their vehicle found the car, the New York Daily News reported.

At least 11 deaths caused by shoveling snow were reported in Washington D.C., Delaware, Maryland, New York, Pennsylvania and Virginia, including one police officer.

U.S. Capitol Police Officer Vernon Alston, 44, died of a heart attack while shoveling snow at his Delaware home.

Read: Elderly Man Gets Ticket For Driving Car That Was Nearly Completely Covered in Snow

An 18-year-old woman who suffered from several heart defects and was eight months pregnant also died shortly after shoveling snow outside her Pottstown, Pennsylvania home, according to reports.

Briahna Gerloff was found collapsed and unresponsive by a family member a short time after she shoveled snow, which her relatives had warned might be dangerous, NBC-10 reported.

Despite CPR attempts by her family and life-saving efforts made by first responders, Gerloff and her unborn child were unable to be saved, according to the station.

At least eight people in Kentucky, North Carolina and Virginia were killed in car crashes.

One man in Kentucky was killed while plowing snow-covered highways, while a teenager in Ohio was fatally struck while he was sledding behind an all-terrain vehicle, officials said.

A 44-year-old South Carolina man was killed after being hit by a vehicle that slid out of control after hitting a patch of ice, authorities said.

Five deaths were confirmed in Virginia to be from hypothermia.  

Watch: Surprising Household Items to Keep You Cozy at Home During a Blizzard