MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 52
has little value as an indication ofcoming weather. Under certain conditions in winter,rime ice may form. Nimbostratus (Ns)—Low, structureless rain cloud. Nimbostratus stands for bad flying weather. It haslittle value as a guide to flying conditions ahead. Note: The prefix Fracto applied to cloud… … Fig. 11. Stratocumutus. 4. Convection Clouds (Mean base. 1600 it.) Cumulus (Cu.) — Medium high. Thick, rounded,lumpy clouds which resemble cotton balls. Usuallyhave flat bases. Cast dense shadows and appear in
Airplanes
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