Eemian interglacial era

The Eemian interglacial era (Sangamon era in North America) is the second-to-latest interglacial era of the Ice Age. Occuring between 130,000 and 70,000 years ago, it had a peak of warm weather around 125,000 years ago, when forests reached as far north as North Cape (now tundra) in northern Norway. Sea levels at that time were higher than they were now, possibly indicating greater deglaciation of even more of the world than now (one presumes the ice caps of Greenland and Antarctica).

At the peak of the Eemian, the world was generally warmer and wetter than it now is. Trees grew as far north as Baffin Island in the Canadian arctic archipelago, and the prairie-forest boundary in the Great Plains lay further west -- near Lubbock, Texas instead of near Dallas, Texas where it now exists. The era quickly cooled to conditions cooler and drier than the present, and by 65,000 years ago, a full glacial era had returned.