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In a TAF report, how should SCT025 be interpreted?

  • A

    Scattered cloud with a cloud base of 2500 ft above the 1013 pressure level.

  • B

    Scattered cloud with a cloud base of 2500 ft above aerodrome level.

  • C

    Scattered cloud with a cloud base of 2500 ft above mean sea level.

  • D

    Scattered cloud with a cloud base of 25 ft above ground level.

In a TAF (Terminal Aerodrome Forecast):

  • SCT025 means scattered clouds (SCT = scattered)
  • The number 025 represents the cloud base height in hundreds of feet above the aerodrome level (not sea level or pressure level). So, 025 = 2500 feet AGL (Above Ground Level at the aerodrome).

The cloud amount can be expressed as:

FEW - no more than quarter cover (1-2 oktas)
SCT - over ¼ but no more than ½ cover (3-4 oktas)
BKN - over half but not complete cover (5-7 oktas)
OVC - complete cover (8 oktas)

Note: The height of the cloud base is reported in hundreds of ft above aerodrome level

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