That is absolutely true about the snow not lasting now. During the Winters of the mid 80's (which I'm lucky enough to remember), lying snow would stay on the ground for 1 to 2 weeks before thawing. Now, like in February this year the snow barely lasted on the ground for 1 to 2 days! I think this is partly due to the distinct lack of Autumnal and Winter frosts meaning ground temperatures are high, plus the heat lag around from the general warming trend. A similar thing happened during the cold spell in February 2005. We had two weeks of generally cold weather and frequent snow falls, but the snow never accumalated to much, because it thawed so rapidly after each fall.