Up to 6 inches more snow is possible on Sunday as the storm sets in Colorado

Denver can see up to 6 inches more snow on Sunday as the winter storm approaches the subway. The slow system has already dumped about 15 centimeters on Saturday in some parts of the city, while northern Colorado totals are already in the double digits.

The storm is expected to be more intense on Sunday as it makes its way along the Interstate 25 corridor, said National Weather Service meteorologist Zach Hiris.

“Now that we are in that upward flow, we will see steady moderate to heavy snow across the area,” he said.

Traveling through the area will be next to impossible, and damp, heavy snow can cause power outages, according to the weather service. Interstate 70 was closed in both directions on Saturday by the mountains; it reopened on Sunday west of Denver, but was closed on the eastern plains. Other roads, including Interstate 25 north of Fort Collins, remained closed on Sunday.

Cities in northern Colorado saw more snow than Denver at night and Sunday morning, with reports of up to 15 inches in the Fort Collins area, according to the weather service. Northern Colorado and cities in the foothills like Boulder and Evergreen could see up to 20 centimeters more of snow during Sunday night. Boulder has an estimated 52% chance of getting more than a foot of snow on Sunday.

To the south, the Colorado Springs area is expected to receive an additional 5 inches of snow.

The uneven variation in snowfall totals is due to the north-south movement of the storm and its slower-than-expected onset, said Hiris.