Things definitely change at the 100th meridian. The question now seems to be if that dividing line is slowly moving east.

The most recent report from the United Nations Intergovernmental Panel on Climate Change (IPCC) is the most strident released by the IPCC yet, saying that it is “unequivocal” that human influence has warmed the global climate system, with observed changes already impacting every region on the planet with some of the changes researchers observed in the climate described as “unprecedented.”