So far, we have been fairly lucky, although snowfall has trended downwards over the past several decades. Since 1950, I calculate the trend as a loss of 7" per century, so a fairly slow decline. But looking at the map posted by Brian Brettschneider, it looks like the oranges and reds aren't looming too far to our south. Do you guys think we will eventually reach a level of warming where snowfall in Pittsburgh plummets on the order of 25 or 50 percent?