* WHAT...Heavy snow expected. Total snow accumulations between 14 and 24 inches with up to 30 inches possible in the eastern Catskills, Berkshires and southern Greens. * WHERE...All of eastern New York and western New England. * WHEN...Until 7 PM EST Monday. * IMPACTS...Travel could be difficult to impossible due to snow covered roads and very low visibilities. * ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour, locally 3 inches per hour, are expected through this evening. Snow will become lighter in intensity overnight into Monday morning and continue for much of the day before tapering off Monday evening.