* WHAT...Heavy snow. Additional snow accumulations 6 to 11 inches. The highest amounts are expected along the Lake Ontario shore and southeast of Lake Ontario due to lake enhancement. * WHERE...Monroe, Wayne, Northern Cayuga, Oswego, Jefferson, and Lewis Counties. * WHEN...Until 7 AM EST Tuesday. * IMPACTS...Travel will be difficult. The hazardous conditions will impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...The bulk of the heavy snow is expected to taper overnight, with moderate snow continuing along the southern and southeastern shores of Lake Ontario through Monday night, especially from Wayne to Oswego counties .