Snow will spread across Iowa tonight and will begin falling in portions of Illinois toward morning. By sunrise, 1 to 2 inches of snow will have fallen in eastern Iowa, resulting in slush and snow covered roads. During the morning hours Sunday, light to moderate snow will continue, with total accumulations of 2 to 4 inches. The highest totals will be on grassy and elevated surfaces. Roads in eastern Iowa and northern Illinois are expected to be slippery due to packed and slush until the snow ends during the late morning and afternoon.
A winter weather advisory has been issued from 8pm in central Iowa, and 3am in eastern Iowa until 3pm Sunday. Snow accumulations in the advisory area will be between 2 and 4 inches. Winds will be light out of the south at 5 to 10-mph, so blowing snow will not be a concern. Light to moderate wet snow will create slippery travel conditions over the area, and will reduce visibility to under 1 mile at times.
A winter weather advisory for snow means that periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving.