i remember when it was called the Canadian Clipper, and the Siberian Express before that and simply COLD AIR MASS before that... polar vortex my achin azz, feh i remember when it was called the Canadian Clipper, and the Siberian Express before that and simply COLD AIR MASS before that... polar vortex my achin azz, fehI always preferred “Blizzard.” It wasn’t always a tasty Dairy Queen treat.