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Although they look fake, these clouds are very real! They look this way because they are the upper-level "exhaust" of air that is lost from the back side of a supercell thunderstorm. These clouds are rare (especially with such good definition seen here) because it takes extremely strong updrafts inside a thunderstorm to produce the exhaust at high levels in the atmosphere - which then descend and take the strange appearance. The name "mammatus" is derived from the same Latin word.
Slain Navy SEAL Jon Tumilson's dog "Hawkeye" lies next to his casket during funeral services in Rockford, Iowa. Tumilson was one of 30 American soldiers killed in Afghanistan on August 6 when their helicopter was shot down during a mission to help fellow troops who had come under fire. .
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