2 places in Colorado got below -40
Here are the lowest temperatures across Colorado on Tuesday morning, according to the National Weather Service.
Everything you need to know about the polar vortex bringing extreme cold to Colorado
 · 1dColorado Public Radio
With a final sub-zero blast, polar vortex on its way out of Colorado
Polar vortex in Colorado: Tracking more snow, even colder temps
More than 500 flights delayed, canceled at DIA as polar vortex freezes Colorado
More than 500 flights were delayed or canceled at Denver International Airport on Monday as a polar vortex continued to freeze metro Denver.
Fort Collins Coloradoan4d
Colorado will be bitter cold but a polar vortex it is not
Colorado will see its coldest temperatures of the winter as a mass of cold air descends on the state from the Artic. But despite the bitter cold, this weather event is not a polar vortex.
The Gazette5d
Polar vortex to blast 12-24 inches of snow across Colorado's mountains over MLK weekend
The Arctic air mass will be in Colorado Friday afternoon, but the effects of the polar vortex won't be fully felt until after the sun goes down. Snow will come into the state's high country in two ...
A powerful Polar Vortex in the stratosphere brings frigid temperatures to US
The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is forecast to provide frigid weather as it continues to bring sub-zero temperatures to the Midwest, Mid-Atlantic and plunge deep into the South.
Map Shows Coldest Places in US as Polar Vortex Descends
According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is always present near the poles, though it weakens during summer and intensifies in winter.
The Polar Vortex Is Coming: Expect Temperatures Below Zero And Snow In These Areas
Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.
More than 400 flights delayed, canceled at DIA as polar vortex freezes Colorado
More than 400 flights were delayed or canceled at Denver International Airport on Monday as a polar vortex continued to freeze Colorado. There were 394 delayed and 27 canceled flights as of 12:40 p.m.
Plunging temps from polar vortex could cause icy metro Denver commute Friday night
It’s going to be a rude awakening tomorrow — a full taste of winter, for sure,” National Weather Service meteorologist says
How cold was it? Fraser's minus 44 night beats Minnesota for coldest in nation
The town of 1,400 hardy souls takes pride in the fact that because of its inversion at the base of two mountain ranges, it's often the coldest place in the nation. Fraser’s annual average temperature is 34.8 degrees Fahrenheit and the growing season is only four to seven days per year.
Dangerous windchills are expected in Denver. Find out where this frigid air headed to Colorado is coming from.
Cold air originating from the Arctic Ocean will be dislodged and sent to the continental United States this weekend.