WINTER STORM WARNING IN EFFECT FROM 4 AM TO 7 PM EST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 7 inches * WHERE...Portions of central, northern, northwest and southern New Jersey, southeast Pennsylvania, northeast Maryland and northern Delaware. * WHEN...From 4 AM to 7 PM EST Sunday. * IMPACTS...Travel could be very difficult particularly late Sunday morning and early Sunday afternoon. * ADDITIONAL DETAILS... A heavy band of snowfall will overspread the area Sunday morning, with snow continuing into Sunday afternoon. Snowfall rates of 2 in/hr will be possible within this heavy band, and isolated snowfall totals in excess of 7 inches will be possible. Snowfall will clear the area from SW-NE Sunday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.