from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a dense cloud associated with fire or volcanic activity.


Sorry, no etymologies found.


  • The fire and its updrafts of warm air even generated some of its own thunderclouds -- "pyrocumulus," according to Kevin Kraujalis, meteorologist with the National Weather Service in Duluth. rss feed

  • The easternmost fire in the image is extreme enough that it produced a pyrocumulus cloud, a dense towering cloud formed when intense heat from a fire pushes air high into the atmosphere.

    Climate Progress

  • The pyrocumulus cloud and the detection of smoke in the stratosphere are good indicators that the fires are large and extremely intense.

    Climate Progress

  • "We call it pyrocumulus, where all the ash coming out of the fire causes lifting and convection, and can cause a thunderstorm-looking top," he said.

    Latest News - Yahoo!7 News

  • I found myself wondering what they would have thought of the pyrocumulus smoke clouds soaring over the city.



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  • Clouds that form directly over and because of large fires such as forest fires.

    January 11, 2007