Whether you are watching this first thing in the morning or it's ten minutes before the bell rings at the end of the day,Fridays are awesome.I'm Carl Azuz with CNN STUDENT NEWS. There are just over 316 million people in the U.S. and two thirds of them are feeling a blast of unseasonably cold weather.Now, cold is relative. Today's high here in Atlanta, Georgia is 46, but it's normally 64 this time of year.The other day Casper, Wyoming's high was two, as in two degrees.It's normally 45 right now. Denver, Colorado, Lovett, Texas, Livingston,Montana, they've all set records this week involving cold temperatures for mid-November.It's not that it never gets cold in these places or other American cities.It's that it never does it so early in the season. So why?Blame the bomb cyclone. Yep, that's right. Bomb cyclone is actually a real weather term.Frigid weather and snow are already in the U.S. So, how did it happen? Blame it on the leftovers from Super-typhoon Nuri.It built up to Alaska mixing warm tropical air with the polar vortex. And changing the direction of the Jetstream allowing cold air just going to the U.S.Normally, between the polar vortex stays where it's supposed to be-in the North Pole, trapping frigid air up where it belongs.But the bomb cyclone shook things up and sent all that Arctic air south.