One of the most often repeated impacts of climate change is the disappearance of the glaciers from Glacier National Park. The science has been that the year 2030 would see the melting of the last glacier. The glaciers of Glacier National Park have melted by 67 percent in the past hundred years. Unfortunately, temperatures in the West are more than double what they were estimated to be in 1992 when the 2030 date was projected. So the new estimation of the day that Glacier National Park will become Glacierless National Park is 2020, ten years ahead of schedule.
And in case you weren’t paying attention earlier, since 1992, temperatures at Glacier (which pretty well represent temperatures across a large part of the Mountain West) have increased more than twice what the estimate was in 1992.
http://news.nationalgeographic.com/news/2009/03/090302-glaciers-melting.html