Watch Live: How much more snow in Chicago winter storm?

A Chicago winter storm created hazardous conditions all day Friday that will continue to do so into Saturday morning, with heaps of heavy snow and blistering winds, followed by mind-numbing cold. 

While there had been a lull in the action, another round of snow was set to begin late Friday night -- and winds gusting up to 45 to 50 mph could make for blizzard conditions for parts of the area. 

A winter storm warning has been issued for most of the CBS 2 viewing area until noon Saturday.

School closings piled up before the snow did, while snow plows treated the streets before the first flakes fell.

A ground stop delay was issued at O'Hare International Airport Friday afternoon. It was initially to be in place until Friday night, but was later lifted Airlines have reported hundreds of flight cancellations at Chicago airports as the storm hits the area. 

As of 10 a.m., there had been more than 200 service requests to the city's 311 line for reports of downed trees or limbs on Friday.  

Snow blanketed Chicago area roadways Friday - leading to dangerous conditions. Travelers are advised to take public transportation if possible. Those who choose to drive are further advised to allow additional time and drive slowly. 

When will it snow again, and how much more?

A band of heavy snow with rates over 1 inch per hour fell during the Friday morning commute, dropping 1-3 inches of wet snow. The kind of snow raises the risk of a heart attack from shoveling.

The rain and snow line lifted north Friday afternoon, allowing for wet conditions in Chicago.

Meanwhile, light snow continued northwest of a line from Mendota to Schaumburg late Friday afternoon, but additional snow accumulation was to be low for the afternoon with above-freezing temperatures.

Another round of heavy snow was moving in Friday evening as an intense area of low-pressure tracked across the region. Snowfall rates upwards of an inch per hour were likely Friday evening into Saturday morning.

The center of the winter storm was to arrive after midnight, allowing for another round of accumulating snow and dangerous driving conditions. Data suggests between midnight and 6 a.m. Saturday, we'll have snow showers that will be blowing on the heels of strong wind gusts. There's still the potential overnight for blizzard conditions for areas west of the city, as visibilities could be greatly reduced.

Additional snowfall through Saturday morning could add up to another 6 inches in the far northwestern suburbs. Chicago will range from lighter amounts near the lake to 3 to 5 inches to the west. Lower amounts are expected for most areas south of I-80.

Additional significant snowfall is not expected after 6 a.m. on Saturday, but blowing snow is still possible through at least midday. Very cold temperatures follow this winter storm, with temperatures falling below zero on Saturday night and wind chills as cold as -20 to -25 degrees. 

A Wind Chill Advisory for Sunday starting at Midnight until Wednesday at 9 a.m. for Illinois. Parts of Indiana will be under the advisory until noon Monday. 

Dangerous cold

Temperatures fall throughout the day on Saturday, approaching near 0 degrees by Sunday morning. 

Dangerous wind chills are expected with subzero readings.

Frigid weather is expected to continue through the middle of next week. 

CBS News Chicago will continue to stream the latest on the forecast, flight delays and cancellations, and school closings all day. Watch it here or for free on Pluto TV. 

Suburban snowfall 

Heavy snowfall continued throughout the day Friday in some Chicago suburbs. 

Snow in west suburban Franklin Park came down fast and hard. On top of the heavy snowfall, the snow was blowing around early Friday, which caused low visibility.

Slush on the ground also accumulated as well and snow falls, leaving streets slippery. 

Residents who parked on suburban streets were quick to get out the snow brushes and ice scrapers. In north suburban Barrington, snow buried cars overnight, and continued to pile as snow fell through the morning. 

In southwest suburban Plainfield, roadways were covered with thickly-packed snow. Areas along Route 59 experienced what CBS 2's Mugo Odigwe described as a "whiteout." 

Late Friday afternoon in Crystal Lake, CBS 2's Noel Brennan estimated 10 or 11 inches of snow were on the ground. Plowed snow was piled up so high that it was as tall as the street signs.

On Maple Street in Crystal Lake, Sean Tominey – who was working from home Friday – also spent the day plowing his driveway with a snowblower.

"I have no official measurement, but it's about shin deep as I was shoveling, so that's pretty deep," said Tominey. "We're in it till tomorrow afternoon, so we'll probably be out later this evening before it get too cold, just doing it again so we don't get behind too much."

In Hoffman Estates, CBS 2's Marybel González reported the residential streets were eerily quiet late Friday afternoon, with snow going on falling and piling up on top of existing mounds of accumulation.

In Aurora, CBS 2's Sara Machi reported the snow transitioned to rain late in the afternoon. Earlier, the City of Aurora deployed its entire snow team to keep primary roads clear and salted – while contractors worked on residential roads.

Some businesses stayed open – including a carwash, where the manager told employees they would see customers. They were right.

In Barrington, wires on the tracks disrupted Metra Union Pacific-Northwest trains Friday. Trains were back running by the mid-afternoon.

Preparing for the snow to pick up again

Late Friday night, it had stopped snowing in the northwest suburbs – after relentless, rainy snow left a slushy mess in its wake. The snow is not over – there is more to come late Friday night into Saturday – but crews in Schaumburg were focusing on cleaning up Friday night.

Large mounds of snow were left behind as plows cleared the parking lot of a high school – leaving large mounds of snow behind.

In South Barrington, the neighborhood streets were left with cold, wet snow – making the roads slippery. Residents came out to shovel their sidewalks twice in some instances.

"Prepared for it - I went and got gas last night for the snowblower, and we're good to go," said Brent Lux. "A lot of heavy snow."

A lot of heavy snow…

In Hoffman Estates, a family went tubing, sledding, and even snowboarding down a hill in full winter gear.

"Finally, the snow has arrived – and these guys are excited as hell," said the kids' father.

With the snow set to pick back up late Friday night, there was concern about all the slush turning to ice.