It's so cold because the earth is so warm.

Coolio once had a song that said, "Gonna gotta get up to get down." It always seem so backward. Just like the fact that his "polar vortex" is caused by global warming. Discovery channel released a video talking about how all of this cold air is spilling south from the arctic due to global warming. With jet streams and low pressure systems, it results in wind chill values as low as -55 degrees in the Cedar Valley.

It's way too much science for me to elaborate for you so I will let them.

Let the conspiracies begin!