I came across this news item:http://www.accuweather.com/en/weather-news/severe-storm-new-jersey-absegami-graduation-picture/66277
If you go down to the link below the radar picture where it says, "Is that a tornado...?" and click you will get some interesting pictures and a lot of information. I had never heard of a tail cloud, especially a beaver tail, but there they are, with informative captions. Hope someone learns something from this as I did.