WeatherQuestion 62 of 100
A METAR reads: KBOI 091853Z 30008KT 5SM HZ SCT007 BKN013 OVC025 19/12 A2988. What is the reported ceiling?
a.700 ft AGL, because SCT007 is the lowest reported layer
b.2,500 ft AGL, because OVC025 is the only solid overcast layer
c.1,300 ft AGL, because BKN013 is the lowest broken or overcast layer
d.1,900 ft AGL, the average height of the three reported layers
Explanation
Ceiling is defined as the height above ground of the lowest layer reported as broken or overcast, so BKN013 gives a 1,300 ft AGL ceiling. Cloud heights in a METAR are given in hundreds of feet above the reporting station, so 013 means 1,300 ft. Scattered layers such as SCT007 are not ceilings, the overcast at 2,500 ft is above the broken layer, and averaging the layers is not a recognized method.
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