Appendix 3 F1
United Kingdom
Template for TAF
Key:
inclusion mandatory;
inclusion conditional, dependent on meteorological conditions or method of observation;
inclusion optional.
Note 1:
the ranges and resolutions for the numerical elements included in TAF are provided in a separate table below this template.
Note 2:
the explanations for the abbreviations can be found in ICAO Doc 8400 ‘ Procedures for Air Navigation Services – Abbreviations and Codes (PANS-ABC) ’ .
To be included whenever applicable. No qualifier for moderate intensity. | ||||||
Up to four cloud layers. | ||||||
Consisting of up to a maximum of four temperatures (two maximum temperatures and two minimum temperatures). | ||||||
| Element | Detailed content | Template(s) | Examples | |||
|---|---|---|---|---|---|---|
| Identification of the type of forecast (M) | Type of forecast (M) | TAF or TAF AMD or TAF COR | TAF TAF AMD TAF COR | |||
| Location indicator (M) | ICAO location indicator (M) | nnnn | YUDO | |||
| Time of issue of forecast (M) | Day and time of issue of the forecast in UTC (M) | nnnnnnZ | 160000Z | |||
| Identification of a missing forecast (C) | Missing forecast identifier (C) | NIL | NIL | |||
| END OF TAF IF THE FORECAST IS MISSING | ||||||
| Days and period of validity of forecast (M) | Days and period of validity of the forecast in UTC (M) | nnnn/nnnn | 0812/0918 | |||
| Identification of a cancelled forecast (C) | Cancelled forecast identifier (C) | CNL | CNL | |||
| END OF TAF IF THE FORECAST IS CANCELLED | ||||||
| Surface wind (M) | Wind direction (M) | nnn or VRB | 24004MPS; VRB01MPS (24008KT); (VRB02KT) 19005MPS (19010KT) | |||
| Wind speed (M) | [P]nn[n] | 00000MPS (00000KT) 140P49MPS (140P99KT) | ||||
| Significant speed variations (C) | G[P]nn[n] | 12003G09MPS (12006G18KT) 24008G14MPS (24016G28KT) | ||||
| Units of measurement (M) | MPS (or KT) | |||||
| Visibility (M) | Prevailing visibility (M) | nnnn | C A V O K | 0350 CAVOK 7000 9000 9999 | ||
| Weather (C) | Intensity of weather phenomena (C) f1 | – or + | — | |||
| Characteristics and type of weather phenomena (C) | DZ or RA or SN or SG or PL or DS or SS or FZDZ or FZRA or SHGR or SHGS or SHRA or SHSN or TSGR or TSGS or TSRA or TSSN | FG or BR or SA or DU or HZ or FU or VA or SQ or PO or FC or TS or BCFG or BLDU or BLSA or BLSN or DRDU or DRSA or DRSN or FZFG or MIFG or PRFG | RA HZ +TSRA FG –FZDZ PRFG +TSRASN SNRA FG | |||
| Cloud (M) f2 | Cloud amount and height of base or vertical visibility (M) | FEWnnn or SCTnnn or BKNnnn or OVCnnn | VVnnn or VV/// | NSC | FEW010 VV005 OVC020 VV/// NSC SCT005 BKN012 | |
| Cloud type (C) | CB or TCU | — | SCT008 BKN025CB | |||
| Temperature (O) f3 | Name of the element (M) | TX | TX25/1013Z TN09/1005Z TX05/2112Z TNM02/2103Z | |||
| Maximum temperature (M) | [M]nn/ | |||||
| Day and time of occurrence of the maximum temperature (M) | nnnnZ | |||||
| Name of the element (M) | TN | |||||
| Minimum temperature (M) | [M]nn/ | |||||
| Day and time of occurrence of the minimum temperature (M) | nnnnZ | |||||
| Expected significant changes to one or more of the above elements during the period of validity (C) | Change or probability indicator (M) | PROB30 [TEMPO] or PROB40 [TEMPO] or BECMG or TEMPO or FM | ||||
| Period of occurrence or change (M) | nnnn/nnnn or nnnnnn | |||||
| Wind (C) | nnn[P]nn[n][G[P]nn[n]]MPS or VRBnnMPS (or nnn[P]nn[G[P]nn]KT or VRBnnKT) | TEMPO 0815/0818 25017G25MPS (TEMPO 0815/0818 25034G50KT) TEMPO 2212/2214 17006G13MPS 1000 TSRA SCT010CB BKN020 (TEMPO 2212/2214 17012G26KT 1000 TSRA SCT010CB BKN020) | ||||
| Prevailing visibility (C) | nnnn | C A V O K | BECMG 3010/3011 00000MPS 2400 OVC010 (BECMG 3010/3011 00000KT 2400 OVC010) PROB30 1412/1414 0800 FG | |||
| Weather phenomenon: intensity (C) | – or + | — | NSW | BECMG 1412/1414 RA TEMPO 2503/2504 FZRA TEMPO 0612/0615 BLSN PROB40 TEMPO 2923/3001 0500 FG | ||
| Weather phenomenon: characteristics and type (C) | DZ or RA or SN or SG or PL or DS or SS or FZDZ or FZRA or SHGR or SHGS or SHRA or SHSN or TSGR or TSGS or TSRA or TSSN | FG or BR or SA or DU or HZ or FU or VA or SQ or PO or FC or TS or BCFG or BLDU or BLSA or BLSN or DRDU or DRSA or DRSN or FZFG or MIFG or PRFG | ||||
| Cloud amount and height of base or vertical visibility (C) | FEWnnn or SCTnnn or BKNnnn or OVCnnn | VVnnn or VV/// | NSC | FM051230 15004MPS 9999 BKN020 (FM051230 15008KT 9999 BKN020) BECMG 1618/1620 8000 NSW NSC | ||
| Cloud type (C) | CB or TCU | — | BECMG 2306/2308 SCT015CB BKN020 | |||
Ranges and resolutions for the numerical elements included in TAF
There is no aeronautical requirement to report surface wind speeds of 100 kt (50 m/s) or more; however, provision has been made for reporting wind speeds up to 199 kt (99 m/s) for non-aeronautical purposes, as necessary. | |||
| Elements | Range | Resolution | |
|---|---|---|---|
| Wind direction: | ° true | 000–360 | 10 |
| Wind speed: | MPS | 00–99 f4 | 1 |
| KT | 0–199 | 1 | |
| Visibility: | M | 0000–0750 | 50 |
| M | 0800–4 900 | 100 | |
| M | 5 000–9 000 | 1 000 | |
| M | 10 000 – | 0 (fixed value: 9 999 ) | |
| Vertical visibility: | 30’s M (100’s FT) | 000–020 | 1 |
| Cloud: height of cloud base: | 30’s M (100’s FT) | 000–099 100–200 | 1 10 |
Air temperature (maximum and minimum): °C | –80 – +60 | 1 | |
Annotations
Textual amendments
Footnotes
- f1
To be included whenever applicable. No qualifier for moderate intensity.
- f2
Up to four cloud layers.
- f3
Consisting of up to a maximum of four temperatures (two maximum temperatures and two minimum temperatures).
- f4
There is no aeronautical requirement to report surface wind speeds of 100 kt (50 m/s) or more; however, provision has been made for reporting wind speeds up to 199 kt (99 m/s) for non-aeronautical purposes, as necessary.