Kansas City International Airport, for example, has an 85% chance of snowfall exceeding .1 of an inch, according to data from the weather service. The probability of higher snowfall totals drops rapidly, with only a 50% chance of snowfall exceeding 1 inch. The chance of 2 inches or more of snow is less than 10%.

At least 46 million people were under a winter storm warning as of Thursday as the storm spreads along the Gulf Coast Friday, according to the weather service. The storm should weaken by Saturday, bringing lighter snow between 1 and 3 inches to parts of the Northeast, the Mid-Atlantic and the Ohio Valley before exiting off the Carolinas.

The winter storm this past weekend brought plenty of extreme conditions to the Kansas City metro, sending hundreds of people to the hospital.

The latest winter storm is bringing snow and ice to thousands of counties across more than 20 states. Here’s what to know about the forecast, key cities and expected impacts.

A powerful winter storm that unleashed heavy snowfall and coated roads with ice across much of Texas and Oklahoma has pushed into the South, leading governors to declare states of emergency and prompting widespread school closures.