SIOUX FALLS, S.D. — A massive winter storm blew toward the center of the U.S. on Monday, threatening millions of people with heavy snow, freezing rain and flooding.
The National Weather Service warned that there would be “numerous, widespread, and impactful weather hazards in the heart of the country this week.” Across the Rockies and into the northern Plains and parts of the Midwest, people were warned to prepare for blizzard-like conditions.
Those farther south in Texas and Louisiana could get heavy rains with flash flooding, hail and tornadoes by Tuesday. The storm will continue southeast into Florida later in the week, forecasters said.
“It will be a busy week while this system moves across the country,” said Marc Chenard, a meteorologist at the National Weather Service’s headquarters in College Park, Maryland.
Officials in western South Dakota told residents to brace for 6 inches (15 centimeters) or more of snow: “Get your shovels handy, get your groceries, and check other needed supplies. The roads will be hard to travel.”
A swath of country stretching from Montana into western Nebraska and Colorado was under blizzard warnings Monday, and the National Weather Service said that as much as 2 feet (61 centimeters) of snow was possible in some areas of western South Dakota and northwestern Nebraska. Meanwhile, ice and sleet were expected in the eastern Great Plains.
National Weather Service warned that up to about half an inch (2.5 centimeters) of ice could form and winds could gust up to 45 miles per hour (72 kilometers per hour) in parts of Iowa, Minnesota and South Dakota. Power outages, tree damage, falling branches and hazardous travel conditions all threatened the region.
“This is a ‘we are not kidding’ kind of storm,” the South Dakota Department of Public Safety said in a tweet urging people to stock up on essentials, then stay home once the storm hits.
Thousands of students from Native American communities across Wyoming, Nebraska and the Dakotas were traveling to Rapid City, South Dakota, for this week’s Lakota Nation Invitational, a high school athletic event. Brian Brewer, one of the organizers, said he had urged schools and participants to travel early.