Training Guide in Surface Weather Observations - Multiple Choices
Training Guide in Surface Weather Observations - Multiple Choices
Training Guide in Surface Weather Observations - Multiple Choices
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5.2 Sky Cover<br />
Figure 5-2. <strong>Weather</strong> Observer’s View of Celestial Dome.<br />
The amount of sky cover is reported for each layer of clouds or obscur<strong>in</strong>g phenomena visible from the<br />
station. Clouds or obscur<strong>in</strong>g phenomena constitute a layer if their bases are at approximately the same<br />
level. Certa<strong>in</strong> types of clouds tend to spread out at higher levels. The spread<strong>in</strong>g out is reported as a<br />
separate layer if it is horizontal and at a level different from the parent cloud. In Figure 5-3, cloud “A”<br />
would be reported as two layers, one at 2,500 feet and the other at 20,000 feet; cloud “B” would be<br />
reported as one layer at 2,500 feet.<br />
Up to six layers may be reported for sky condition; reportable contractions are as follows:<br />
Reportable<br />
Contractions<br />
Mean<strong>in</strong>g<br />
5-2<br />
Summation Amount of<br />
Sky Cover<br />
VV Vertical Visibility 8/8<br />
SKC SKy Clear 0<br />
FEW FEW less than 1/8 to 2/8<br />
SCT SCaTtered 3/8 to 4/8<br />
BKN BroKeN 5/8 to less than 8/8<br />
OVC OVerCast 8/8<br />
Table 5-1. Reportable Contractions for Sky Cover
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