Meteorologists say a storm system carrying powerful winds and heavy snow will be moving across northern Nebraska and Iowa through Wednesday. The National Weather Service has posted winter storm warnings from the northern Nebraska Panhandle all the way to the northeastern corner of Iowa. Up to a dozen inches of snow is expected in some spots, with deep drifts born of winds gusting to 40 mph.

Authorities say slick roadways and blowing snow will make travel hazardous. Lighter snow or a wintry mix is expected along the southern edge of the system’s path.

A Winter Weather Advisory remains in effect until 9-a.m. Wednesday for Harrison and Shelby Counties. The Advisory goes into effect for Audubon-Guthrie-Carroll-Crawford and Greene Counties, from Noon today through 6-p.m. Wednesday. And, a Winter Storm Warning is in effect for Sac County, until 9-a.m., Wednesday.