Two-thirds of the U.S. is being affected by this storm, said CNN meteorologist Monica Garrett. On Saturday, significant snowfall is expected across much of the Midwest, Ohio Valley, Northeast and New England. Snow totals from six to 12 inches are possible, according to the National Weather Service.
In Guymon, Oklahoma, the ice was so slippery that resident Kassidy Stroup was unable to get up in the driveway. She shared a video of her futile struggle to open her truck door as she slid this way and that on the icy path.
Stroup planned to return to work later, she told CNN, after the ice melted a little.
Jenni Pittman, science and operations officer for the National Weather Service, posted on Twitter on Friday a time-lapse video of icicles forming on the roof overhang of her Olathe, Kansas home.
Pittman worked on telecommuting, she said, but her husband said the roads were "just passable".
Moment and impacts throughout the day
Snow should cover the Midwest in the early afternoon. Much of Minnesota, Michigan and northern Iowa could be left with a foot of snow.
Eastern cities like New York, Boston and Philadelphia will receive a quick snow grenade in the afternoon.
"This will be another complicated forecast for large cities along the I-95 corridor," said CNN meteorologist Taylor Ward.
The precipitation will start like snow on Saturday, before the warmer air transitions to rain.
"New York City and Boston are likely to see 2 to 4 inches of snow before it all ends up raining on Saturday night and early Sunday," said Ward.
Inland areas have a better chance of staying in the snow and are likely to have slightly larger amounts.
Inland portions of the Northeast could be 20 to 30 cm in northern New York and up to 15 cm in northern Maine.
Parts of the Ohio valley can be left with a severe layer of ice. Up to 250 cm of ice can accumulate in places like Indianapolis, St. Louis and Cleveland.
Washington, DC, could even receive some ice before it starts to rain.
Expect significant headaches when traveling in areas affected by snow. Flights will be delayed or even canceled; therefore, check with your airline before traveling.
Airports like Chicago, New York and Boston may be the most affected by Saturday's weather.
Road trips will also be tricky. Wind conditions will create snow blows and off-white conditions in some of the most affected areas of the Midwest.
"The winds in these regions can reach gusts above 80 km / h, producing blows and considerable snow variations and life-threatening travel conditions", according to the meteorological service.
Very low temperatures will follow the storm
Behind the system, extremely low temperatures set in at the end of the weekend and at the beginning of the week.
"Temperatures well below average probably in this arctic air, with temperatures up to 20 degrees below average," according to the meteorological service.
"After the storm comes out, the intense cold will set in. The high temperatures in the region will remain in the digits of a Sunday and until the beginning of next week, while the night temperatures will drop from 10 to 20 degrees below zero", says Enfermaria.
Minneapolis will drop below zero on Sunday, Monday and Tuesday mornings. Temperatures will only reach one digit on Sunday. Chicago lows will be in the digits from Sunday to Tuesday morning, with increases in teenagers and lows in their 20s.
Wind conditions will make temperatures appear much colder.