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Interpreting Military aerodrome colour codes

 

In addition to a normal TAF or METAR, military aerodromes may use a colour code, which is a form of shorthand for their crews to reinforce the information in the main message.

The meaning of each colour is listed below. Minimum base of lowest cloud (SCT or more) above aerodrome level

A code of black indicates the airbase is closed for reasons other than cloud or visibility .

Minimum base of lowest cloud (SCT or more) above aerodrome level:
 

>= 2500 ft

1500-2499 ft

700-1499 ft

300-699 ft

200-299 ft

< 200 ft

Minimum reported visibility

           

>= 8 km  

BLU

WHT

GRN

YLO

AMB

RED

5000-7999 m

WHT

WHT

GRN

YLO

AMB

RED

3700-4999 m

GRN

GRN

GRN

YLO

AMB

RED

1600-3699 m

YLO

YLO

YLO

YLO

AMB

RED

800-1599 m

AMB

AMB

AMB

AMB

AMB

RED

< 800 m

RED

RED

RED

RED

RED

RED

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