25.1 MB (1.9 MB compressed)
3630 x 2420 pixels
30.7 x 20.6 cm ⏐ 12.1 x 8.1 in (300dpi)
ROGER HILL / SCIENCE PHOTO LIBRARY ROGER HILL / SCIENCE PHOTO LIBRARY
Supercell thunderstorm forming over rural Oklahoma, 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. Photographed on 22 April 2013, in Leedey, Oklahoma, USA.
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