Windows to the Universe

Cumulonimbus clouds are much larger and more vertically developed than fair weather cumulus. They can exist as individual towers or form a line of towers called a squall line.
Courtesy of Angie J Venturato

This photo of a supercell was taken in mid-August, 1997, in Fowlerville, Michigan. The supercell developed in about 30 minutes. This supercell moved in a southeasterly direction and eventually caused heavy downpours, lightning flashes, and small hail 20 miles away in Brighton, Michigan. The two humps of the cloud signify moist air rising.
Courtesy of Angie J Venturato

This large white cloud creates thunderstorms. In a thunderstorm, you may have heavy rain, thunder and lightning. These storms move quickly. Scientists have named this type of cloud "cumulonimbus".
Courtesy of Angie J Venturato

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Cumulonimbus clouds are much larger and more vertically developed than fair weather cumulus. They can exist as individual towers or form a line of towers called a squall line. Courtesy of Angie J Venturato

This large white cloud creates thunderstorms. In a thunderstorm, you may have heavy rain, thunder and lightning. These storms move quickly. Scientists have named this type of cloud "cumulonimbus". Courtesy of Angie J Venturato

Cumulonimbus clouds are much larger and more vertically developed than fair weather cumulus. They can exist as individual towers or form a line of towers called a squall line.
Courtesy of Angie J Venturato

This large white cloud creates thunderstorms. In a thunderstorm, you may have heavy rain, thunder and lightning. These storms move quickly. Scientists have named this type of cloud "cumulonimbus".
Courtesy of Angie J Venturato