Refer to figure.
The sky is mostly clear, with just a small amount of cloud visible, covering between one and two-eighths of the sky. In terms of an aerodrome weather report, how should this sky condition be recorded?
ICAO Annex 3 - Meteorological Service for International Air Navigation
4.5 Clouds
4.5.4 Reporting
4.5.4.3 Recommendation.— In local routine reports, local special reports, METAR and SPECI:
a) cloud amount should be reported using the abbreviations “FEW” (1 to 2 oktas), “SCT” (3 to 4 oktas), “BKN” (5 to 7 oktas) or “OVC” (8 oktas);
The clouds are reported using a system based on eighths (or oktas) of the sky covered by clouds. This system provides a standardized way to describe the amount of cloud cover. This reporting system helps pilots and air traffic controllers assess weather conditions quickly and make informed decisions for flight safety.
| ABBREVIATION | CLOUD COVERAGE |
| FEW (few clouds) | 1 to 2 oktas or eighths |
| SCT (scattered clouds) | 3 to 4 oktas or eighths |
| BKN (broken clouds) | 5 to 7 oktas or eighths |
| OVC (overcast clouds) | 8 oktas or eighths |
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