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Folks board the #46 RTD bus on Colorado Blvd near Yale during heavy snow Thursday afternoon November 17, 2016.

Snow starts to gather on the ground around Garfield Lake Park in Denver, November 17, 2016.

Truck driver Tim Swartz on his way to California, stop to chain up, wearing shorts, as snow falls, in the mountain, on Interstate 70 near Georgetown, November 17, 2016. Interstate 70 is closed in multiple places due to multiple crashes and slide-offs, according to the Colorado Department of Transportation.

UPS delivery driver Even Griffiths unloads tires at the Discount Tire shop at Colorado Blvd and Dickenson Pl during heavy snow Thursday afternoon November 17, 2016.

Snow begins to fall on a pedestrian on the 16th Street Mall in Denver.

Brennan Mason putts his ball on the green after playing nine holes at Littleton Golf and Tennis club with friend John Zack. They started at 11 before the snow started to stick in the ground.

John Zeck and Brennan Mason (L) play nine holes at Littleton Golf and Tennis club. They started at 11 before the snow started to stick in the ground.

A pedestrian walks along Colorado Blvd near Yale Ave in Denver amid heavy snow Thursday, Nov. 17, 2016.

Aspen leaves struggle to keep their fall colors during Denver's first snow storm November 17, 2016.