Colour state other than clouds or low visibility (e.g. ice or other obstructions) then the word BLACK is written in full and placed immediately before the actual colour state (e.g. BLACKWHT). The colour state may be appended to a METAR report. A short period forecast called a "TREND" which covers the following two hours from the observation may also be added, often with reference to the colour state. The following criteria are used to determine the colour state: Colour state Colour states is a system used for quickly showing meteorological conditions. Meteorological colour states are determined by the relevant worst condition from
Buff (colour) would neither put on arms [armour] or buff coat the day of the battle". Such buff leather was suitable for "buffing" or serving as a "buffer" between polished objects. It is not clear which bovine ""buffalo"" referred to, but it may not have been any of the animals called "buffalo" today. The word "buff" meaning "enthusiast" or "expert" (US English) derives from the colour "buff", specifically from the buff-coloured uniform facings of 19th-century New York City volunteer firemen, who inspired partisan followers among particularly keen fire watchers. "In the buff", today meaning naked, originally applied to English soldiers wearing the