The southern two-thirds of South Dakota is under a Winter Storm Watch for Thursday and Friday. Forecasters are predicting very heavy snow totals for an area south of Interstate 90. South Dakota Public Broadcasting's Gary Ellenbolt visits with Jeff Chapman with the National Weather Service in Sioux Falls. Chapman says the system is winding up and heading for the state.
According to Rapid City meteorologist John Chamberlain, the western part of the state is primed for a large amount of moisture as well.