Word: altocumulus
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...crowd broke into a faint cheer. A narrow slit had appeared in the eastern altocumulus cloud bank. As the sun climbed toward the slit and the stop watches ticked on toward the scheduled time, the expedition held its breath. At 6:07 the sun, already in partial eclipse, broke into the clear. At 6:15 on the dot, Dr. Stewart shouted...
...Most helpful clouds are the woolly, lumpy cumulus and its relatives-the high stratocumulus (bumpy) and altocumulus. These rich vapors are excellent for playing hide-&-seek with enemy planes, give a fighter cover for sudden dodges and quick surprises. Because the cumulus frequently hovers over islands, it often shows a flyer where land is when he cannot see the land itself. It also shows glider pilots where rising air currents...
Altostratus, altocumulus, and secondary altocumulus clouds have also been found to indicate approaching storms, but only by a margin of from a few minutes to two hours. The altostratus cloud is a dense mass of falling snow, and by computing its height and rate of fall, the approximate time of its arrival at the ground can be told...
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