A week after the Denver area got 6 inches of snow, a new system dumped more Wednesday — and like last time the front is moving east.
The Denver area got up to 10 inches, while nearby mountains saw 14 inches, NBC affiliate KUSA TV reported.
Blizzard conditions were possible in and around the city, forecasters warned.
The snow made for a messy morning commute, and both directions of Interstate 25 were closed from Cheyenne, Wyo., to the Colorado border.
Several dozen flights were canceled at Denver International Airport.
Some 5,000 customers lost power in the Greeley area.
The new storm follows highs on Monday in the 70s, and 50s on Tuesday.
The sun and warmer temps are expected back on Thursday, but then another system could dump more snow by Saturday morning.
The system hitting Colorado on Wednesday later moved towards the Plains and the Mississippi Valley, weather.com reported. Atlanta's airport could see weather delays by Thursday as a result.
Much of Nebraska and two-thirds of Kansas would see snow, weather.com said, while snow and rain will mix from central Iowa to southwest Kansas.
"Blizzard conditions are possible at times today in northwestern Kansas, with windy conditions expected for most areas," it added.
The storm last Wednesday left 6 inches in the Denver area and downed trees, cutting power to some 200,000 customers in Colorado.
That system later contributed to the heavy snow that paralyzed much of the Northeast over the weekend.