* WHAT...Heavy snow expected. Additional snow accumulations between 4 and 8 inches. Northwest winds gusting as high as 35 mph Monday afternoon will cause areas of blowing and drifting snow. * WHERE...Portions of central New York and northeast Pennsylvania. * WHEN...Until 7 PM EST Monday. * IMPACTS...Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snowfall hourly rates could exceed 2 inches per hour through the evening hours. The snow tapers down this evening. Temperatures will be very cold throughout this storm, hovering in the upper single digits to teens the entire time, with colder wind chills.