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  2. METAR - Wikipedia

    en.wikipedia.org/wiki/METAR

    METAR LBBG 041600Z 12012MPS 090V150 1400 R04/P1500N R22/P1500U +SN BKN022 OVC050 M04/M07 Q1020 NOSIG 8849//91= METAR indicates that the following is a standard hourly observation. LBBG is the ICAO airport code for Burgas Airport. 041600Z indicates the time of the observation.

  3. Colour state - Wikipedia

    en.wikipedia.org/wiki/Colour_state

    Colour states is a system used for quickly showing meteorological conditions. [1] [2]Meteorological colour states are determined by the relevant worst condition from the visibility and significant cloud height.

  4. IWXXM - Wikipedia

    en.wikipedia.org/wiki/IWXXM

    ICAO Meteorological Information Exchange Model (IWXXM) is a format for reporting weather information in XML/GML.IWXXM includes XML/GML-based representations for products standardized in International Civil Aviation Organization (ICAO) Annex III, such as METAR/SPECI, TAF, SIGMET, AIRMET, Tropical Cyclone Advisory (TCA), Volcanic Ash Advisory (VAA), [1] Space Weather Advisory and World Area ...

  5. Location identifier - Wikipedia

    en.wikipedia.org/wiki/Location_identifier

    The two-letter code appears in the first two, middle, or last two positions of the four-character code. The use of the FAA identifier system in meteorology ended in 1996 when airways reporting code was replaced by METAR code. The METAR code is dependent wholly on the ICAO identifier system.

  6. Visibility - Wikipedia

    en.wikipedia.org/wiki/Visibility

    It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibility affects all forms of traffic: roads, railways, sailing and aviation. The geometric range of vision is limited by the curvature of the Earth and depends on the eye level and the height of the object being ...

  7. SYNOP - Wikipedia

    en.wikipedia.org/wiki/SYNOP

    This is a code number from 0 to 4, with 0, 1 and 2 meaning data is included, and 3 and 4 indicating no precipitation data. i X is a code number indicating the manner of station operation, and the format used in group 7wwWW; codes 1, 2 and 3 indicate a staffed station, while codes 4 to 7 indicate an automatic station.

  8. Trend type forecast - Wikipedia

    en.wikipedia.org/wiki/Trend_Type_Forecast

    A TTF is a professionally considered forecast for weather over a two-hour period, [1] and is based on an actual weather report, such as a METAR or SPECI and appended to the end of it. [1] A TTF is similar to or sometimes in addition to a TAF, a terminal aerodrome forecast, but during the TTF's validity period is considered superior to a TAF.

  9. Road Weather Information System - Wikipedia

    en.wikipedia.org/wiki/Road_Weather_Information...

    An RWIS station. A Road Weather Information System (RWIS) comprises automatic weather stations (AWS) (often technically referred to as Environmental Sensor Stations (ESS) as they also cover non-meteorological variables) in the field, a communication system for data transfer, and central systems to collect field data from numerous ESS.