Precipitation will spread from western into central Iowa this afternoon and evening. Initially, it may begin as a rain/snow mix across southern and western Iowa before changing to snow. A band of 5 to 8 inches of snow is expected by Friday morning from western through central to northeastern Iowa. There will be a sharp gradient of snowfall on either side of the heaviest band of snow. Snow rates may exceed 1" per hour at times this evening leading to rapid snow accumulations on roads and slick travel conditions. A small change in the location of the band could alter forecast snow amounts. * WHAT...Heavy snow expected. Total snow accumulations between 5 and 8 inches. * WHERE...Portions of central to northeastern Iowa. * WHEN...From 6 PM this evening to 6 AM CST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening commute.