Snow so heavy that it could bury the field. Temperatures so low that beer will freeze. These are just some of the conditions expected during "the worst weather we've ever seen on the opening weekend of the playoffs." Extreme weather could crash multiple tailgating parties and football games as the playoffs get underway, including some of the most highly-anticipated matchups of the weekend. "There is going to be some of the worst weather we've ever seen on the opening weekend of playoffs," AccuWeather Chief Meteorologist Bernie Rayno said. Coldest game in Miami, Kansas City history possible Saturday Arctic air will...