Up to 10 inches of snow blanketed the metro area and Front Range overnight, and an additional 1 to 3 inches are expected to fall before the storm moves out of Colorado.
The storm, which began Wednesday evening, dropped 5 to 10 inches of snow around the Denver area overnight, according to the National Weather Service.
About 17 inches of snow fell along the foothills west of Boulder.
Heavy snow will continue to fall along the Front Range at the rate of about an inch an hour in Boulder, Jefferson, Denver and Douglas counties. In surrounding counties, the snow fall will continue at about half an inch per hour.
A winter storm warning will remain in place for the metro area until about 11 a.m.
As the storm moves out, total snow fall for the Front Range and the Denver area could reach 8 to 14 inches.
Wind gusts as strong as 30 mph will continue along Interstate 25 until mid-day. The high temperature in Denver is expected to reach 19 degrees.
A winter weather advisory will remain in place in the mountains until 6 p.m. About 4 to 10 inches of snow is expected to fall before sunset.
Temperatures are expected to reach a high of about 17 degrees in some areas.
Tamara Door, chief executive of the Downtown Denver Partnership, said she didn't anticipate major disruptions to business operations downtown, though many are getting a later start than usual as workers arrive late. Offices already are operating with reduced staffs due to the holidays, relieving traffic congestion. Also, many downtown workers already take public transportation, she said.
The CU-Boulder campus is closed according to an official text sent to students early Thursday morning.
Roads across the metro area are snow packed with little or no lane definition.
Denver Department of Public Works deployed a full crew of plows last night, focusing on major roadways and streets with stripes.
Crews are using dry and liquid de-icer to help break up snow and ice on the roadways. A number of heavy plows are working in northeast Denver to control large snow drifts in the area.
About 74 plows are working to clear the 4 to 6 inches of snow packed on roads throughout the metro area, according to the Colorado Department of Transportation.
Southbound lanes on U.S. 285 at Colorado Highway Eight near Morrison has reopened after being closed for a few hours after an accident this morning.
Shortly before 9 a.m. officials announced that U.S. Highway Six over Loveland Pass was open. The pass closed at 2:21 a.m.
Several minor accidents have been reported on major highways, causing brief lane closures and delays.
As heavy snowfall continues, crews are focusing on trying to clear roadways instead of deploying de-icing materials.
Bridges, overpasses and ramps are particularly slick and snow packed. Commuters are reminded to give all snow plows extra space.
As of 7:30 a.m., no major accidents or injuries had been reported across the state, said Trooper Nate Reid, a spokesman for the Colorado State Patrol. Most of the accidents reported have been cars sliding off of the snow packed roads.
Most of the reported accidents have been in Jefferson, Clear Creek, Summit and Douglas counties, Reid said. A few accidents have been reported in northern Colorado.
Drivers should leave plenty of room between themselves and the cars in front of them and allow plenty of extra time in their commute, Reid said. Commuters are asked to stay at home if they do not have to drive, but to keep water and warm clothes in their vehicles if they do have to go out.
All Denver city agencies will open at 10 a.m. and all Denver recreation centers will also push back their opening time to 10 a.m.
Trash and recycling pick-up will be at their regularly scheduled times today.
Denver District and Denver County Courts will remain on their regular schedules.