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• n  a dark cloud of great vertical extent charged with electricity; associated with thunderstorms

• cumulonimbus
• thundercloud

News & Articles

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• PHOTOS: Freaky cloud formations paint a scary sky over San Antonio
  Ominous storm clouds rolled into the San Antonio area on Friday afternoon, causing some KENS 5 viewers to grab their cameras and quickly send photos of a few funnel-like phenomenons. Despite their scary appearance, KENS 5's Bill Taylor said they are just impressive cumulonimbus clouds. >> Click here to launch the slideshow!
  June 15, 2013 - KENS 5 San Antonio