# Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight, repealing Regulation (EC) No 482/2008, Implementing Regulations (EU) No 1034/2011, (EU) No 1035/2011 and (EU) 2016/1377 and amending Regulation (EU) No 677/2011 (Text with EEA relevance), Appendix 3

Extent: E+W+S+N.I.

Template for TAF
Key:
M inclusion mandatory;
C inclusion conditional, dependent on meteorological conditions or method of observation;
O 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)
– 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)
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)
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
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

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Source: https://www.legislation.gov.uk/eur/2017/373/annex/V/appendix/3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-373/annex-V/appendix-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.