* WHAT...Snow. Total snow accumulations between 3 and 7 inches. Locally higher totals possible in portions of Porter County. * WHERE...Lake IN and Porter Counties. * WHEN...Until midnight CST tonight. * IMPACTS...Roads, bridges, and overpasses, will be slick and hazardous, including the Interstate 80, 90, and 94 corridor. Visibility may occasionally drop below 1 mile, particularly Sunday afternoon. * ADDITIONAL DETAILS...Steady snow overnight will transition into localized lake effect snow Sunday afternoon. Total snow accumulations will range from around 3 inches near the Kankakee River Valley to locally 6 inches within a few miles of the Lake Michigan shoreline.