The storm is being called a "bomb cyclone" because the pressure in the center of the storm was expected to drop quickly as it raced toward Colorado.
Denver International Airport saw a gust of 75 miles per hour, which is equivalent to a Category 1 hurricane.
Further pressure dropslater Wednesdayshould be equivalent to what one would typically find in Category 2 hurricane.
More than six inches of heavy, wet snow is expected in Colorado, Wyoming, Nebraska and the Dakotas. "Lots of blowing snow, lots of high winds, drifting snow".
The National Weather Service Denver/Boulder said, "Blizzard conditions are likely across the northern mountains, northern foothills, Palmer Divide and adjacent plains". Satellites are watching the insane winter storm develop and it looks like a doozy.
Travel may be impossible, CNN reports, and both flights and schools are being canceled in areas where the white-out blizzard may hit.
Storm Ulmer will also unleash a powerful wind across the central US through Thursday.
The bomb cyclone will mostly affect the Rockies, the Central and Northern Plains and the Upper Midwest.
"70 million people will potentially be affected by this storm system across the Plains states, bringing blizzard conditions, potential tornadoes and flash flooding", Dean said Wednesday on "FOX & friends". Blizzard and Winter Storm Warnings remain in effect.
Watches, warnings and advisories for the storm cover about 1.5 million square miles, which is roughly half of the area of the continental United States - and they stretch from the Mexican border to the Canadian border. Severe blizzard conditions are expected and several weather warnings are in effect in these areas.
This storm is not expected to bring those kind of conditions to Alabama, but it could kick off a few strong to severe storms as it pulls a cold from through the state on Thursday.
An outbound Continental Airlines jet gets de-iced at Denver International Airport January 05, 2017.
It already left more than 100,000 customers without power in Colorado as of Wednesday afternoon, according to Xcel Energy.
School districts across the region, including Denver Public Schools, are closed on Wednesday, citing "severe winter weather and road conditions".
In Nebraska, officials late Wednesday morning closed a roughly 130-mile strech of westbound Interstate 80, from Ogallala to the state line with Wyoming, because of the blizzard.
In addition, flood watches have been issued across the Midwest and Great Plains amid concerns that heavy rains will melt snowpack and trigger significant flooding.