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Mammatus clouds bubble downward from the anvil of a complex of severe thunderstorms east of Norman Oklahoma at sunset. Such well-formed mammatus can indicate the existence of a powerful updraft capable of producing severe weather.
Mammatus clouds bubble downward from the anvil of a complex of severe thunderstorms east of Norman Oklahoma at sunset. Such well-formed mammatus can indicate the existence of a powerful updraft capable of producing severe weather.
Filename: wsi-cld063.tif
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