* WHAT...Heavy snow. A band of 9 to 13 inch accumulations peaking roughly from around Van Buren, Missouri across Southern Illinois and the Ohio River counties of Western Kentucky to the Evansville Tri-State region. 5 to 8 inches of snow is forecast in other locations across far southeast Missouri and southern portions of west Kentucky. Periods of heavy sleet in far southeast Missouri and western Kentucky are possible, mainly Saturday evening through midday Sunday, with some freezing rain possible in the southern Kentucky Pennyrile. Sleet mixing in those areas may add up to over an inch, with a light glaze of freezing rain. * WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. * WHEN...From midnight CST /1 AM EST/ tonight to 6 PM CST /7 PM EST/ Sunday. * IMPACTS...Travel could be very difficult and may become impossible at times. Extreme cold will exacerbate the danger.