Four people were hospitalized Sunday after an eight-car pileup on southbound Interstate 25 near Monument Hill, according to the Colorado State Patrol.
Two people suffered serious but non life-threatening injuries and two others had minor injuries from a crash that involved eight vehicles in four separate rear-end and side collisions, said Sgt. Jason Jones with the state patrol.
The first wreck happened about 4 p.m. and the next three followed minutes later, blocking traffic on the highway for almost three hours as troopers worked to get the vehicles towed away.
Road conditions in northern El Paso County were icy and visibility significantly reduced because of a storm in the area, but the cause of the pileup was not determined, Jones said.
Three people were cited following the pileup, Jones said.
A winter storm warning for northern and western El Paso County and all of Teller County remained in effect until midnight Sunday, when the snow was expected to decrease slightly, according to the National Weather Service in Pueblo.
"This storm system is still ongoing, we're not close to being done with it," said meteorologist Jennifer Stark said Sunday afternoon. "Precipitation will continue through the evening hours. Sometimes it will be lighter, sometimes heavier, and a heavier band could drop as much as an inch of snow in an hour."
By 5 p.m., the Colorado Springs Airport was reporting a trace of snow accumulating on grassy areas. A northerly wind has been blowing most of the snow away from the airport, where the storm's official snowfall total will be measured, Stark said.
Weather forced the Colorado Springs Sky Sox to postpone Sunday's game. The game is scheduled to be made up as part of a Monday doubleheader.
The Denver Post reported that Interstate 70 was shut down near Vail Pass.
For closings and delay, click here for continuous updates through the night.
The total snow accumulation was impossible to predict, the weather service said.
No snowfall totals were available Sunday, except for a preliminary report from eastern Fremont County of 3.2 inches.
The weather service forecast a 90 percent chance of continued precipitation through Monday morning.
Snow and rain could persist until about 7 a.m. Monday, with conditions becoming mostly sunny with a high near 38.