Winter weather will return to the area late tonight and continue Wednesday. Unlike previous events this winter, this storm has the potential to bring a large area of freezing rain to the region. There is the potential for icing over portions of northwest Iowa, southeast South Dakota, and northeast Nebraska. The greatest threat of significant icing will near Highway 20 from near Sioux City to Storm Lake in northwest Iowa. However, some ice accumulation may extend as far north as Interstate 90 in South Dakota and Minnesota.
Freezing rain is expected to move into northern Nebraska after midnight tonight and reaching the Missouri valley by sunrise
Wednesday. This may bring a glaze of ice as far north as Sioux City and Yankton by the morning commute on Wednesday.
Precipitaiton will move north and east on Wednesday and Wednesday night. As it does, the freezing rain will be mixed with sleet or snow. However, as the day progresses, precipitation will primarily be freezing rain over much of northwest Iowa, northeast Nebraska and adjacent areas of far southeast South Dakota. A mix of freezing rain, sleet and snow is expected over the remainder of the area.
Freezing rain totals through Wednesday night will range from less 0.05 inches north of interstate 90 to an excess of 0.25 inches near Sioux City and Storm Lake..