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purchased jigsaw puzzle for a relative they were very impressed and when they have finished the puzzle they are going to mount it in a frame
mrs l.
12th April 2010

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Supercell thunderstorm

Supercell thunderstorm. Bolts of cloud-to-ground lightning in a supercell thunderstorm over Kansas, USA. A supercell thunderstorm is a severe long-lived storm within which the wind speed and direction changes with height. This produces a strong rotating updraft of warm air, known as a mesocyclone, and a separate downdraft of cold air. Tornadoes may form in the mesocyclone, in which case the storm is classified as a tornadic supercell thunderstorm. The storms also produce torrential rain and hail.. Stunning Photo Gifts From Science Photo Library