{ "name": "TAF", "version": "1.0.0", "description": "TAF: Terminal Aerodrome Forecast", "identifier": "TAF", "tokens": { "identifier": { "pattern": "^TAF$", "category": "keyword", "description": "Forecast type identifier" }, "amendment": { "pattern": "^AMD$", "category": "keyword", "description": "Amendment indicator for amended forecast" }, "correction": { "pattern": "^COR$", "category": "keyword", "description": "Correction indicator for corrected forecast" }, "icao": { "pattern": "^[A-Z]{4}$", "category": "location", "description": "ICAO location indicator CCCC", "placeholder": { "value": "AAAA", "editable": [ { "start": 0, "end": 4 } ] } }, "issueTime": { "pattern": "^\\d{6}Z$", "category": "datetime", "description": "Day and time of issue in UTC", "validator": "DDHHmmZ", "placeholder": { "value": "000000Z", "editable": [{ "start": 0, "end": 2 }, { "start": 2, "end": 4 }, { "start": 4, "end": 6 }] } }, "nil": { "pattern": "^NIL$", "category": "keyword", "description": "Missing forecast indicator" }, "validityPeriod": { "pattern": "^\\d{4}\\/\\d{4}$", "category": "datetime", "description": "Validity period Y1Y1G1G1/Y2Y2G2G2 (day+hour start/end)", "validator": "DDHH/DDHH", "placeholder": { "value": "0000/0000", "editable": [ { "start": 0, "end": 2 }, { "start": 2, "end": 4 }, { "start": 5, "end": 7 }, { "start": 7, "end": 9 } ] } }, "cnl": { "pattern": "^CNL$", "category": "keyword", "description": "Cancelled forecast indicator" }, "wind": { "pattern": "^(VRB|\\d{3})(\\d{2,3}|P(99|49))(G\\d{2,3})?(KT|MPS)$|^00000(KT|MPS)$", "category": "measurement", "description": "Surface wind dddff[Gfmfm]{KT|MPS}, P99/P49 for speeds >99kt/>49mps" }, "cavok": { "pattern": "^CAVOK$", "category": "status", "description": "Ceiling And Visibility OK - vis >=10km, no cloud <1500m/MSA, no CB/TCU, no sig wx" }, "visibility": { "pattern": "^\\d{4}$|^9999$|^0000$", "category": "measurement", "description": "Prevailing visibility VVVV in metres", "placeholder": { "value": "0000", "editable": [ { "start": 0, "end": 4 } ] } }, "weather": { "pattern": "^[-+]?(VC)?(MI|PR|BC|DR|BL|SH|TS|FZ)?(DZ|RA|SN|SG|IC|PL|GR|GS|UP)*(BR|FG|FU|VA|DU|SA|HZ|PY)?(PO|SQ|FC|SS|DS)?$", "category": "phenomenon", "description": "Forecast weather w'w' - intensity/proximity + descriptor + phenomena (Code table 4678)" }, "nsw": { "pattern": "^NSW$", "category": "phenomenon", "description": "No Significant Weather - end of weather phenomena in change group" }, "cloud": { "pattern": "^(FEW|SCT|BKN|OVC)(\\d{3})(CB|TCU)?$", "category": "measurement", "description": "Cloud layer NsNsNshshshs - amount + height in 100s ft + type", "appendToPrevious": true }, "verticalVisibility": { "pattern": "^VV(\\d{3}|\\/\\/\\/)$", "category": "measurement", "description": "Vertical visibility VVhshshs in 100s ft when sky obscured", "placeholder": { "value": "VV000", "editable": [ { "start": 2, "end": 5 } ] } }, "nsc": { "pattern": "^NSC$", "category": "status", "description": "No Significant Cloud - no cloud <1500m/MSA, no CB/TCU" }, "skyClear": { "pattern": "^(SKC|CLR)$", "category": "status", "description": "Sky Clear (regional usage)" }, "temperatureMax": { "pattern": "^TXM?\\d{2}\\/\\d{4}Z$", "category": "measurement", "description": "Maximum temperature TXTFTF/YFYFGFGFZ (optional, regional)" }, "temperatureMin": { "pattern": "^TNM?\\d{2}\\/\\d{4}Z$", "category": "measurement", "description": "Minimum temperature TNTFTF/YFYFGFGFZ (optional, regional)" }, "prob": { "pattern": "^PROB(30|40)$", "category": "trend", "description": "Probability indicator PROB30 or PROB40" }, "tempo": { "pattern": "^TEMPO$", "category": "trend", "description": "Temporary fluctuations - changes <1h each, <50% of period" }, "becmg": { "pattern": "^BECMG$", "category": "trend", "description": "Becoming - change expected at regular/irregular rate" }, "fm": { "pattern": "^FM\\d{6}$", "category": "trend", "description": "From - new self-contained forecast period" }, "changeTime": { "pattern": "^\\d{4}\\/\\d{4}$", "category": "datetime", "description": "Change group time period YYGG/YeYeGeGe", "placeholder": { "value": "0000/0000", "editable": [ { "start": 0, "end": 2 }, { "start": 2, "end": 4 }, { "start": 5, "end": 7 }, { "start": 7, "end": 9 } ] } } }, "structure": [ { "id": "identifier", "cardinality": [ 1, 1 ] }, { "id": "modifierGroup", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "amendment", "cardinality": [ 0, 1 ] }, { "id": "correction", "cardinality": [ 0, 1 ] } ] }, { "id": "icao", "cardinality": [ 1, 1 ] }, { "id": "issueTime", "cardinality": [ 1, 1 ] }, { "id": "mainContent", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "nil", "terminal": true, "cardinality": [ 1, 1 ] }, { "id": "forecastBody", "cardinality": [ 1, 1 ], "sequence": [ { "id": "validityPeriod", "cardinality": [ 1, 1 ] }, { "id": "forecastContent", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "cnl", "terminal": true, "cardinality": [ 1, 1 ] }, { "id": "fullForecast", "cardinality": [ 1, 1 ], "sequence": [ { "id": "wind", "cardinality": [ 1, 1 ] }, { "id": "visibilityGroup", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "cavok", "cardinality": [ 1, 1 ] }, { "id": "visibilityDetails", "cardinality": [ 1, 1 ], "sequence": [ { "id": "visibility", "cardinality": [ 1, 1 ] }, { "id": "weather", "cardinality": [ 0, 3 ] }, { "id": "cloudGroup", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "nsc", "cardinality": [ 1, 1 ] }, { "id": "skyClear", "cardinality": [ 1, 1 ] }, { "id": "verticalVisibility", "cardinality": [ 1, 1 ] }, { "id": "cloud", "cardinality": [ 1, 4 ] } ] } ] } ] }, { "id": "temperatureMax", "cardinality": [ 0, 1 ] }, { "id": "temperatureMin", "cardinality": [ 0, 1 ] }, { "id": "changeGroups", "cardinality": [ 0, null ], "oneOf": [ { "id": "tempoGroup", "cardinality": [ 1, 1 ], "sequence": [ { "id": "prob", "cardinality": [ 0, 1 ] }, { "id": "tempo", "cardinality": [ 1, 1 ] }, { "id": "changeTime", "cardinality": [ 1, 1 ] }, { "id": "wind", "cardinality": [ 0, 1 ] }, { "id": "tempoVisGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "cavok", "cardinality": [ 1, 1 ] }, { "id": "tempoVisDetails", "cardinality": [ 1, 1 ], "sequence": [ { "id": "visibility", "cardinality": [ 0, 1 ] }, { "id": "tempoWeatherGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "weather", "cardinality": [ 1, 3 ] }, { "id": "nsw", "cardinality": [ 1, 1 ] } ] }, { "id": "tempoCloudGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "nsc", "cardinality": [ 1, 1 ] }, { "id": "verticalVisibility", "cardinality": [ 1, 1 ] }, { "id": "cloud", "cardinality": [ 1, 4 ] } ] } ] } ] } ] }, { "id": "becmgGroup", "cardinality": [ 1, 1 ], "sequence": [ { "id": "becmg", "cardinality": [ 1, 1 ] }, { "id": "changeTime", "cardinality": [ 1, 1 ] }, { "id": "wind", "cardinality": [ 0, 1 ] }, { "id": "becmgVisGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "cavok", "cardinality": [ 1, 1 ] }, { "id": "becmgVisDetails", "cardinality": [ 1, 1 ], "sequence": [ { "id": "visibility", "cardinality": [ 0, 1 ] }, { "id": "becmgWeatherGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "weather", "cardinality": [ 1, 3 ] }, { "id": "nsw", "cardinality": [ 1, 1 ] } ] }, { "id": "becmgCloudGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "nsc", "cardinality": [ 1, 1 ] }, { "id": "verticalVisibility", "cardinality": [ 1, 1 ] }, { "id": "cloud", "cardinality": [ 1, 4 ] } ] } ] } ] } ] }, { "id": "fmGroup", "cardinality": [ 1, 1 ], "sequence": [ { "id": "fm", "cardinality": [ 1, 1 ] }, { "id": "wind", "cardinality": [ 1, 1 ] }, { "id": "fmVisGroup", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "cavok", "cardinality": [ 1, 1 ] }, { "id": "fmVisDetails", "cardinality": [ 1, 1 ], "sequence": [ { "id": "visibility", "cardinality": [ 1, 1 ] }, { "id": "weather", "cardinality": [ 0, 3 ] }, { "id": "fmCloudGroup", "cardinality": [ 1, 1 ], "oneOf": [ { "id": "nsc", "cardinality": [ 1, 1 ] }, { "id": "verticalVisibility", "cardinality": [ 1, 1 ] }, { "id": "cloud", "cardinality": [ 1, 4 ] } ] } ] } ] } ] }, { "id": "probGroup", "cardinality": [ 1, 1 ], "sequence": [ { "id": "prob", "cardinality": [ 1, 1 ] }, { "id": "changeTime", "cardinality": [ 1, 1 ] }, { "id": "wind", "cardinality": [ 0, 1 ] }, { "id": "probVisGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "cavok", "cardinality": [ 1, 1 ] }, { "id": "probVisDetails", "cardinality": [ 1, 1 ], "sequence": [ { "id": "visibility", "cardinality": [ 0, 1 ] }, { "id": "probWeatherGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "weather", "cardinality": [ 1, 3 ] }, { "id": "nsw", "cardinality": [ 1, 1 ] } ] }, { "id": "probCloudGroup", "cardinality": [ 0, 1 ], "oneOf": [ { "id": "nsc", "cardinality": [ 1, 1 ] }, { "id": "verticalVisibility", "cardinality": [ 1, 1 ] }, { "id": "cloud", "cardinality": [ 1, 4 ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ], "suggestions": { "items": { "identifier": [ { "text": "AMD", "description": "Amendment" }, { "text": "COR", "description": "Correction" } ], "taf_short": [ { "type": "switchGrammar", "text": "TAF Short (≤12h) ▶", "description": "Short-term forecast", "target": "fc" } ], "taf_long": [ { "type": "switchGrammar", "text": "TAF Long (12-30h) ▶", "description": "Long-term forecast", "target": "ft" } ], "icao": [], "nil": [ { "text": "NIL", "description": "Missing forecast" } ], "cnl": [ { "text": "CNL", "description": "Cancelled forecast" } ], "issueTime": [], "validityPeriod": [], "changeTime": [], "wind": [ { "text": "VRB02KT", "description": "Variable wind 2 kt" }, { "text": "VRB01MPS", "description": "Variable wind 1 m/s" }, { "text": "00000KT", "description": "Calm wind" }, { "text": "KT", "description": "Knots" }, { "text": "MPS", "description": "Metres per second" } ], "cavok": [ { "text": "CAVOK", "description": "Ceiling And Visibility OK" }, { "text": "9999", "description": "10km or more" }, { "text": "3000", "description": "3000m visibility" } ], "cloud": [ { "text": "NSC", "description": "No significant cloud" }, { "text": "FEW", "description": "Few clouds (1-2 oktas)" }, { "text": "SCT", "description": "Scattered (3-4 oktas)" }, { "text": "BKN", "description": "Broken (5-7 oktas)" }, { "text": "OVC", "description": "Overcast (8 oktas)" }, { "text": "CB", "description": "Cumulonimbus" }, { "text": "TCU", "description": "Towering Cumulus" } ], "weather": [ { "text": "-RA", "description": "Light rain" }, { "text": "RA", "description": "Moderate rain" }, { "text": "+RA", "description": "Heavy rain" }, { "text": "-DZ", "description": "Light drizzle" }, { "text": "DZ", "description": "Moderate drizzle" }, { "text": "-SN", "description": "Light snow" }, { "text": "SN", "description": "Moderate snow" }, { "text": "+SN", "description": "Heavy snow" }, { "text": "-SHRA", "description": "Light rain showers" }, { "text": "SHRA", "description": "Rain showers" }, { "text": "+SHRA", "description": "Heavy rain showers" }, { "text": "-SHSN", "description": "Light snow showers" }, { "text": "SHSN", "description": "Snow showers" }, { "text": "TS", "description": "Thunderstorm" }, { "text": "TSRA", "description": "Thunderstorm with rain" }, { "text": "+TSRA", "description": "Heavy thunderstorm with rain" }, { "text": "TSSN", "description": "Thunderstorm with snow" }, { "text": "TSGR", "description": "Thunderstorm with hail" }, { "text": "BR", "description": "Mist (vis 1000-5000m)" }, { "text": "FG", "description": "Fog (vis <1000m)" }, { "text": "BCFG", "description": "Patches of fog" }, { "text": "PRFG", "description": "Partial fog" }, { "text": "MIFG", "description": "Shallow fog" }, { "text": "FZFG", "description": "Freezing fog" }, { "text": "HZ", "description": "Haze" }, { "text": "FU", "description": "Smoke" }, { "text": "VA", "description": "Volcanic ash" }, { "text": "DU", "description": "Widespread dust" }, { "text": "SA", "description": "Sand" }, { "text": "-FZRA", "description": "Light freezing rain" }, { "text": "FZRA", "description": "Freezing rain" }, { "text": "+FZRA", "description": "Heavy freezing rain" }, { "text": "-FZDZ", "description": "Light freezing drizzle" }, { "text": "FZDZ", "description": "Freezing drizzle" }, { "text": "BLSN", "description": "Blowing snow" }, { "text": "BLDU", "description": "Blowing dust" }, { "text": "BLSA", "description": "Blowing sand" }, { "text": "SS", "description": "Sandstorm" }, { "text": "DS", "description": "Duststorm" }, { "text": "SQ", "description": "Squalls" }, { "text": "FC", "description": "Funnel cloud" }, { "type": "category", "text": "Forecast Weather", "description": "Weather phenomena (optional)", "children": [ { "text": "-RA", "description": "Light rain" }, { "text": "RA", "description": "Moderate rain" }, { "text": "+RA", "description": "Heavy rain" }, { "text": "-DZ", "description": "Light drizzle" }, { "text": "DZ", "description": "Moderate drizzle" }, { "text": "-SN", "description": "Light snow" }, { "text": "SN", "description": "Moderate snow" }, { "text": "+SN", "description": "Heavy snow" }, { "text": "-SHRA", "description": "Light rain showers" }, { "text": "SHRA", "description": "Rain showers" }, { "text": "+SHRA", "description": "Heavy rain showers" }, { "text": "-SHSN", "description": "Light snow showers" }, { "text": "SHSN", "description": "Snow showers" }, { "text": "TS", "description": "Thunderstorm" }, { "text": "TSRA", "description": "Thunderstorm with rain" }, { "text": "+TSRA", "description": "Heavy thunderstorm with rain" }, { "text": "TSSN", "description": "Thunderstorm with snow" }, { "text": "TSGR", "description": "Thunderstorm with hail" }, { "text": "BR", "description": "Mist (vis 1000-5000m)" }, { "text": "FG", "description": "Fog (vis <1000m)" }, { "text": "BCFG", "description": "Patches of fog" }, { "text": "PRFG", "description": "Partial fog" }, { "text": "MIFG", "description": "Shallow fog" }, { "text": "FZFG", "description": "Freezing fog" }, { "text": "HZ", "description": "Haze" }, { "text": "FU", "description": "Smoke" }, { "text": "VA", "description": "Volcanic ash" }, { "text": "DU", "description": "Widespread dust" }, { "text": "SA", "description": "Sand" }, { "text": "-FZRA", "description": "Light freezing rain" }, { "text": "FZRA", "description": "Freezing rain" }, { "text": "+FZRA", "description": "Heavy freezing rain" }, { "text": "-FZDZ", "description": "Light freezing drizzle" }, { "text": "FZDZ", "description": "Freezing drizzle" }, { "text": "BLSN", "description": "Blowing snow" }, { "text": "BLDU", "description": "Blowing dust" }, { "text": "BLSA", "description": "Blowing sand" }, { "text": "SS", "description": "Sandstorm" }, { "text": "DS", "description": "Duststorm" }, { "text": "SQ", "description": "Squalls" }, { "text": "FC", "description": "Funnel cloud" } ] }, { "text": "NSW", "description": "No Significant Weather" }, { "type": "category", "text": "Weather Change", "description": "Weather phenomena", "children": [ { "text": "-RA", "description": "Light rain" }, { "text": "RA", "description": "Moderate rain" }, { "text": "+RA", "description": "Heavy rain" }, { "text": "-SHRA", "description": "Light rain showers" }, { "text": "SHRA", "description": "Rain showers" }, { "text": "+SHRA", "description": "Heavy rain showers" }, { "text": "TSRA", "description": "Thunderstorm with rain" }, { "text": "+TSRA", "description": "Heavy thunderstorm with rain" }, { "text": "-SN", "description": "Light snow" }, { "text": "SN", "description": "Moderate snow" }, { "text": "+SN", "description": "Heavy snow" }, { "text": "FG", "description": "Fog (vis <1000m)" }, { "text": "BCFG", "description": "Patches of fog" }, { "text": "BR", "description": "Mist (vis 1000-5000m)" }, { "text": "HZ", "description": "Haze" } ] } ], "temperatureMax": [ { "text": "TX25/0612Z", "description": "Max temperature" }, { "text": "TN18/0700Z", "description": "Min temperature" } ], "prob": [ { "text": "BECMG", "description": "Becoming" }, { "text": "TEMPO", "description": "Temporary fluctuations" }, { "text": "PROB30", "description": "Probability 30%" }, { "text": "PROB40", "description": "Probability 40%" }, { "text": "FM061200", "description": "From (new period)" } ] }, "after": { "identifier": [ "identifier", "icao" ], "amendment": [ "icao" ], "correction": [ "icao" ], "icao": [ "issueTime" ], "issueTime": [ "nil", "taf_short", "taf_long" ], "validityPeriod": [ "cnl", "wind" ], "wind": [ "cavok" ], "visibility": [ "cloud", "weather" ], "weather": [ "cloud" ], "cloud": [ "cloud", "temperatureMax", "prob" ], "nsc": [ "temperatureMax", "prob" ], "verticalVisibility": [ "temperatureMax", "prob" ], "cavok": [ "temperatureMax", "prob" ], "temperatureMax": [ "temperatureMax", "prob" ], "temperatureMin": [ "prob" ], "prob": [ "prob", "changeTime" ], "tempo": [ "changeTime" ], "becmg": [ "changeTime" ], "fm": [ "wind" ], "changeTime": [ "wind", "cavok", "weather", "cloud" ], "nsw": [ "cloud", "prob" ] } }, "codeTable4678": { "intensity": { "-": "Light", "": "Moderate", "+": "Heavy" }, "proximity": { "VC": "In the vicinity (8-16 km)" }, "descriptor": { "MI": "Shallow", "PR": "Partial", "BC": "Patches", "DR": "Low drifting", "BL": "Blowing", "SH": "Showers", "TS": "Thunderstorm", "FZ": "Freezing" }, "precipitation": { "DZ": "Drizzle", "RA": "Rain", "SN": "Snow", "SG": "Snow grains", "IC": "Ice crystals", "PL": "Ice pellets", "GR": "Hail (>=5mm)", "GS": "Small hail (<5mm)", "UP": "Unknown precipitation" }, "obscuration": { "BR": "Mist (vis 1000-5000m)", "FG": "Fog (vis <1000m)", "FU": "Smoke", "VA": "Volcanic ash", "DU": "Widespread dust", "SA": "Sand", "HZ": "Haze", "PY": "Spray" }, "other": { "PO": "Dust/sand whirls", "SQ": "Squall", "FC": "Funnel cloud", "SS": "Sandstorm", "DS": "Duststorm" } }, "examples": [ "TAF LFPG 160500Z 1606/1712 24008KT 9999 FEW040", "TAF AMD LFPG 160800Z 1609/1712 27015KT 9999 SCT030 BECMG 1612/1614 BKN020", "TAF LFPG 160500Z 1606/1712 24008KT 9999 FEW040 TEMPO 1612/1618 4000 TSRA BKN025CB", "TAF LFPG 160500Z 1606/1712 24008KT 9999 SCT040 PROB30 1618/1624 2000 +TSRA", "TAF LFPG 160500Z 1606/1712 24008KT 9999 SCT040 PROB40 TEMPO 1612/1620 3000 SHRA BKN015", "TAF EGLL 160600Z 1606/1706 18012KT CAVOK FM161200 22015G25KT 9999 SCT040", "TAF KJFK 160530Z 1606/1712 32015KT P6SM FEW250 TX25/1618Z TN15/1610Z", "TAF LFPG 160500Z 1606/1712 VRB02KT 0400 FG VV002 BECMG 1608/1610 4000 BR BKN010", "TAF LFPG 160500Z 1606/1712 27020G35KT 8000 -SHRA BKN025 TEMPO 1610/1615 4000 +SHRA BKN015CB", "TAF LFPG 160500Z NIL", "TAF LFPG 160500Z 1606/1712 CNL" ] }