Tornado touches down west of Oklahoma City Published May 31, 2013 FoxNews.com A massive tornado has touched down west of Oklahoma City where it has done damage and it is headed toward Oklahoma City. Read more: http://www.foxnews.com/weather/2013/05/31/unstable-air-mass-prompts-tornado-watch-in-central-northeast-oklahoma/#ixzz2Uv5ieDn5 Read more: http://www.foxnews.com/weather/2013/05/31/unstable-air-mass-prompts-tornado-watch-in-central-northeast-oklahoma/#ixzz2Uv5AmVJY Moderate Risk…