*Taken from the 'weather encyclopaedia' at the Weather Channel for Kids (US site)*
http://www.theweatherchannelkids.com/weather_ed/weather_encyclopedia/tornadoes/types_of_tornadoes/
Some of the most violent tornadoes develop from supercell thunderstorms. A supercell thunderstorm is a long-lived thunderstorm possessing within its structure a continuously rotating updraft of air. These storms have the greatest tendency to produce tornadoes, some of the huge wedge shape. The supercell thunderstorm has a low-hanging, rotating layer of cloud known as a “wall cloud.” It looks somewhat like a layer of a layer cake that hangs below the broader cloud base. One side of the wall cloud is often rain-free, while the other is neighboured by dense shafts of rain. The rotating updraft of the supercell is seen on radar as a “mesocyclone.”
Clear as daylight isn't it!?
This article is slightly clearer....from the Independent Newspaper - please follow the URL below (it contains a video and good graphic too).
http://www.independent.co.uk/news/uk/home-news/what-caused-the-bicester-twister-7723178.html
Independent website article and video
Mr I
No comments:
Post a Comment