KANSAS CITY, Mo. – An early spring snowstorm delayed flights at Denver International Airport and closed several roads Saturday, dumping more than a foot of snow in some places.

The snow started falling around midnight in northeast Colorado and then moved into northwest Kansas and southwest Nebraska.

Ten to 15 inches of snowfall had fallen by late Saturday morning north of Interstate 70 in northwest Kansas and northeast Colorado, with another 3 inches expected in the area, said Jerry Killingsworth, a meteorologist for the National Weather Service. The interstate had been shut down Saturday from Denver to Colby, Kan., because of poor visibility.

“It’s a mess here,” said Killingsworth, who is based in Goodland, Kan., which had received 14 inches. “Heavy, wet snow, tree limbs down.”

As the system moved eastward, it threatened to inconvenience fans attending the NCAA men’s college basketball tournament in Kansas City.