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Mammatus are most often associated with the anvil cloud that extends from a cumulonimbus, but may also be found under altocumulus, altostratus, stratocumulus, and cirrus clouds, as well as volcanic ash clouds. In the United States, sky gazers may be most familiar with the very distinct and more common cumulonimbus mammatus. When occurring in cumulonimbus, […]

Patrick Smith has an interesting post about icing, how it affects the airplane and the airlines, and a bit about accidents due to icing. Snow will not stick to an airplane during flight. Ice, however, is another story. Owing to aerodynamic forces, it tends to adhere to the thinner, lower-profile areas, and not to larger […]