A number of cities and counties are under winter storm warnings as a powerful April storm bears down on Iowa. The National Weather Service says cities including Fort Dodge, Mason City, Waterloo, Dubuque, and Cedar Rapids are all under a winter storm warning. Others including Ames, Des Moines, Davenport, and Sioux City are under winter weather advisories. Northern Iowa is again expected to bear the brunt of the storm as anywhere from six to eight inches are expected around Algona and Mason City.