Well, I'm a total novice, but, as no-one else has responded, here goes: Apprently ECM was showing less cold and no snow. Others were showing snow, at first midweek and after in the NE, but, during the day, this has shifted south and the potential for snow Monday evening and Tuesday (or possibly on Monday if temperatures are low enough) has appeared. Beyond that I think it's the toss of a coin. EDIT - see LomondSnowstorm above.