Scattered school closings were reported in parts of Nebraska, South Dakota and Minnesota, and highways were slippery.
"We're getting quite a few calls," Nebraska State Patrol dispatcher Jean Johnson said. "They're mostly just fender-benders."
By noon Tuesday, a band of snow stretched from the Texas Panhandle across parts of Oklahoma, Kansas, Nebraska, South Dakota, Minnesota and northern Wisconsin.
The National Weather Service (news - web sites) posted winter storm warnings for parts of Kansas, Iowa, Minnesota and Wisconsin.
Earlier, the storm had left as much as 19 inches of snow at ski resorts in the Colorado Rockies. And at lower elevations, slippery roads caused accidents in the Denver area that snarled the Tuesday morning commute.
Nearly a foot of snow blanketed parts of western Nebraska's Scotts Bluff County on Tuesday, and an even foot covered the ground at Lake Andes, S.D.