...SIGNIFICANT SNOWSTORM LATE SUNDAY THROUGH MONDAY... * WHAT...Heavy snow expected. Total snow accumulations between 8 and 14 inches. Higher amounts approaching 18 inches are possible along the coast. * WHERE...Portions of south central, southwest, west central, and western Maine. * WHEN...From 7 PM this evening to 1 AM EST Tuesday. * IMPACTS...The potential exists for snowbands that will bring periods of locally heavy snowfall, which will lead to rapid snow accumulations and extremely dangerous travel conditions. Significant snowfall and periods of heavy snowfall rates will combine with low visibility to create very dangerous driving conditions. The hazardous conditions could impact the Monday morning and evening commutes.