A strengthening low pressure system over South Dakota this afternoon is producing a pretty striking temperature gradient across the northern Plains. The system is causing blizzard conditions over much of the Dakotas with temperatures as low as 10°F, while just a few dozen miles away, the town of Shenandoah, Iowa is sitting at a comfortable 79°F.

Here's a zoomed-in view, which gives you a much better look at the warm and cold air flowing around the center of the low:

[Images via SimuAWIPS]