The set of physical properties evaluated as a result of the trend forecast procedure of a routine or special aerodrome meteorological report (METAR or SPECI), as specified in the Technical Regulations (WMO-No. 49), Volume II – Meteorological Service for International Air Navigation. Meteorological aerodrome trend forecast MeteorologicalAerodromeTrendForecast Meteorological Aerodrome TrendForecast 200 MeteorologicalAerodromeTrendForecast The set of physical properties evaluated as a result of an AIRMET, as specified in Technical Regulations, Volume II (WMO-No. 49): Meteorological Services for International Air Navigation. AIRMET Evolving Condition Collection Analysis AIRMET Evolving Condition Collection Analysis AIRMETEvolvingConditionCollectionAnalysis The set of physical properties evaluated as a result of an aerodrome forecast (TAF), as specified in the Technical Regulations (WMO-No. 49), Volume II – Meteorological Service for International Air Navigation. Meteorological aerodrome forecast MeteorologicalAerodromeForecast Meteorological Aerodrome Forecast 200 MeteorologicalAerodromeForecast 2017-11-23T11:08:18.808Z The set of physical properties evaluated as a result of the observation procedure of a routine or special aerodrome meteorological report (METAR or SPECI), as specified in the Technical Regulations (WMO-No. 49), Volume II – Meteorological Service for International Air Navigation. Meteorological aerodrome observation MeteorologicalAerodromeObservation Meteorological Aerodrome Observation 200 MeteorologicalAerodromeObservation D-5 5 The items within this code table are composite observable properties that define the set of physical properties evaluated as a result of regulated procedures specified in Technical Regulations, Volume II (WMO-No. 49): Meteorological Services for International Air Navigation. These include aerodrome observation and forecast reports (e.g. METAR, SPECI and TAF). Code Table D-5: IWXXM observable properties The set of locations where meteorological conditions exist to be reported in a SIGMET, as specified in Technical Regulations, Volume II (WMO-No. 49): Meteorological Services for International Air Navigation. SIGMET Position Collection Analysis SIGMET Position CollectionAnalysis SIGMETPositionCollectionAnalysis The set of meteorological conditions to be reported in a SIGMET, as specified in Technical Regulations, Volume II (WMO-No. 49): Meteorological Services for International Air Navigation. SIGMET Evolving Condition Collection Analysis SIGMET Evolving Condition Collection Analysis SIGMETEvolvingConditionCollectionAnalysis