* WHAT...Heavy snow with mixed precipitation expected. Total snow and sleet accumulations between 7 and 13 inches and ice accumulations around one tenth of an inch. * WHERE...Portions of central, northern, northwest, and southern New Jersey and southeast Pennsylvania. * WHEN...Until 1 PM EST Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour this morning into the early afternoon. The snow will mix with and change to sleet and areas of freezing rain Sunday afternoon into Sunday evening.