"Some of the devastating flooding associated with this storm is due to the fact that heavy rain is falling on areas where there is snow on the ground", said Kristina Dahl, senior climate scientist of the Union of Concerned Scientists (UCS).
The quickly rising floods evacuated people from their homes, washed out roads in communities, and left farmers anxious all the water would drown livestock. The National Weather Service has issued a warning to the people of Colorado, Wyoming, Nebraska and North-South Dakota.
The storm's center was over Iowa and Nebraska on Thursday and will continue delivering unsafe weather conditions to 105 million people who are under some sort of watch, warning or advisory as it moves east and then north into Canada.
The "bomb cyclone" slammed the central United States with hurricane-like winds and blizzard conditions this week, leaving in its tracks heavy rains and flooding.
South Dakota Gov. Kristi Noem closed all state offices Thursday as the blizzard conditions moved in, and later in the day ordered the opening of the state's Emergency Operations Center to handle the response to the blizzard and flooding.
An areal flood Warning for northern and parts of central Iowa has been extended through Saturday evening as "local creeks and streams, as well as the main river branches are running high", according to the weather service.
"This has the potential to be a very severe weather event", Nebraska Governor Pete Ricketts said.
The National Weather Service predicts "much calmer" weather in most areas this weekend.
Firefighters braved blizzard conditions on emergency call-outs in Parker, Colorado, after a "bomb cyclone" swept through the State on March 13.
Wind, blowing snow and snow-packed roadways also made travel treacherous in western Nebraska.
A storm like this brings with it all sorts of hazardous weather. Extreme gusts of winds topping 100 miles per hour have slammed through areas of Texas, Colorado, New Mexico, and Oklahoma.
In the Texas Panhandle, a utility worker was killed while working to restore power amid strong winds pushed in by the storm.
This weather phenomenon is being labeled a "bomb cyclone" by meteorologists and this happens when the atmosphere is experiencing bombogenesis.
In Colorado, a state patrol officer was hit and killed by a auto as he was helping another driver who slid off Interstate 76 near Denver. There are no immediate reports of any injuries, but homes and trees were damaged and power was knocked out to thousands.
How do I get my stranded auto?
Fringes of the storm triggered a tornado in Kentucky, and tornado watches were issued throughout the region and as far east as Arkansas, Mississippi and Tennessee, the NWS reported Friday.
In Michigan, a tornado touchdown was reported Thursday in Vernon, southwest of Flint, and in nearby Durand. As of late Wednesday night, "we still had 1,100 people stranded who had been there anywhere from an hour to seven hours", Kirby said.