Frozen Niagara Falls , America.Frozen Niagara Falls , America.Frozen Niagara Falls , America.Frozen Niagara Falls , America.Frozen Niagara Falls , America. Here are some more pictures of the Polar Vortex.Polar Vortex , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America.Frozen , America. via: PhotoVide & Yahoo