The National Weather Service has issued a winter weather advisory for McHenry County, Illinois, for late Sunday, much of Monday due to high winds over the past few days. The advisory covers DeKalb, La Salle, DuPage, Kane, Kendall, Lake, McHenry and Northern Cook counties in Illinois. A winter weather warning was issued for areas further west. The weather service is confident in its ability to assess snowfall accumulation of more than 6 inches in less than 12 hours. The warning is based on criteria such as snowfall accumulations of over 6 inches. However, the agency is more confident about the potential for blowing snow, which could make travel hazardous during Monday's morning commute. The National Weather Services also warned that wind gusts could reach 35 to 40 mph outside of the storm and 40 mph regularly during the storms.