MASON CITY — An Ice Storm Warning is in effect for Wright, Franklin and Butler counties until midnight tonight, while a Winter Weather Advisory is in effect for the rest of our listening area until midnight. Throughout north-central Iowa, freezing rain will continue through this morning and diminish some before another round of moderate freezing rain arrives later today. In the Ice Storm Warning area, there is the potential for ice accumulations from two to three tenths of an inch with localized areas of four tenths of an inch. In the Winter Weather Advisory area, ice accumulations are expected to be up to a tenth of an inch. A light snow/sleet mix is also possible with accumulations of an inch or less in both areas.