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
Ministerial Conference on the Protection of Forests in Europe information and opinion exchange. The meetings provide guidance on the implementation of the FOREST EUROPE decisions and resolutions, as well as the strategic development of the process. FOREST EUROPE working groups, seminars and workshops are organized to deal with and debate about specific scientific, technical or political topics related t forests. FOREST EUROPE delegates, as well as nominated experts take part in these meetings, the outcomes of which are always presented to the subsequent Expert Level Meeting. The General Coordinating Committee (GCC) coordinates the work of FOREST EUROPE. It is currently composed of representatives from 5 of the FOREST EUROPE