Image: Pyrocumulonimbus cloud over Hiroshima, near local noon. Aug 6 1945

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Description: For decades this image was commonly misidentified as the mushroom cloud of the Little Boy bomb that formed around 8:15 AM local time. However due to its greater height and the wholly different time of day, it is a pyrocumulus* cloud that occurs frequently over firestorms. A Pyrocumulonimbus cloud(PyroCb) is another superior, although not widely accepted, meteorological classification.
Title: Pyrocumulonimbus cloud over Hiroshima, near local noon. Aug 6 1945
Credit: US military.
Author: Not revealed.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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