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3. To be included in accordance with 4.1.4.2 c).
4. To be included in accordance with 4.1.4.2 b) 1).
5. To be included in accordance with 4.2.4.4 b).
6. For automated reports only, in accordance with Section 4.9.
7. To be included in accordance with 4.2.4.4 a).
8. To be included if visibility or RVR < 1 500 m; for up to a maximum of four runways in accordance with 4.3.6.5 b).
9. To be included in accordance with 4.3.6.6 b).
10. To be included in accordance with 4.3.6.6 a).
11. One or more, up to a maximum of three, groups in accordance with 4.4.2.6, 4.8.1.1 and Appendix 5, 2.2.4.1.
12. To be included whenever applicable; no qualifier for moderate intensity in accordance with 4.4.2.5.
13. Precipitation types listed under 4.4.2.3 a) may be combined in accordance with 4.4.2.6 and Appendix 5, 2.2.4.1. Only moderate or heavy precipitation to be
indiceted in trend forecasts in accordance with Appendix 5. 2.2.4.1.
14. Up to four cloud layers in accordance with 4.5.4.1 g).
15. To be included in accordance with 4.8.1.4 a).
16. To be included in accordance with 4.8.1.4 b).
17. To be included in accordance with Chapter 6, 6.3.2.
18. Number of change indicetors to be kept to a minimum in accordance with Appendix 5, 2.2.1; nonnally not exceeding three groups.
Table A3-3. Use of change indicators in trend forecasts
APP 3-20
Change indicator
NOSlG
BECMG
TEMPO
Time indicator and period
-
FMnlnln,nl TLn2n,~n2
TLnnnn
FMnnnn
ATnnnn
-
FMnlnlnlnl TLn2n2n2n2
TLnnnn
FMnnnn
-
Meanicg
no signfcant changes are forecast
the change is
forecast to
temporary
fluctuations are
forecast to
wmmence at nlnlnlnl UTC and be completed by n2$n2n, UTC
commence at the beginning of the trend forecast period and be completed by nnnn UTC
commence at nnnn UTC and be completed by the end of the trend forecast period
occur at nnnn UTC (specified time)
a) commence at the beginning of the trend forecast period and be completed by the end of the
trend forecast period; or
b) the time is uncertain
commence at nlnlnlnl UTC and cease by n2n2n2n2 UTC
commence at the beginning of the trend forecast period and cease by nnnn UTC
commence at nnnn UTC and cease by the end of the trend forecast period
commence at the beginning of the trend forecast period and cease by the end of the trend
forecast period
Appendix 3 Annex 3 - Meteorological Service for International Air Navigan'on
Table A3-4. Ranges and resolutions for the numerical elements
included in local reports
Table A3-5. Ranges and resolutions for the numerical elements
included in METAR and SPEC1
Element as specihed in Chapter 4
Runway:
Wind direction: "true
Wind speed: KMH
KT
Visibility: M
M
KM
RVR: M
M
M
Vertical visibility: M
FT
Clouds: height of cloud M
base: FT
Air temperature; "C
Dew-po~ntte mperature:
QNH; QFE: hPa
APP 3-21 25/11/04
There IS no aeronaut~carl equ~remenlol report sulfa= wnd speeds of 200 kmlh (100 kl) or more; however, provlslon has been made for reporting wnd speeds up lo
399 M(199 kt) for non-aeronaulical purposes, as necessary.
1
Range
01 - 36
010 - 360
Resolution
1
10
Resolution
1
10
1
1
50
100
1 000
999
25
50
100
1
1
1
1
1
1
Element as specr1ed in Chapter 4
Runway: (no units)
Wind direction: " true
Wind speed: KMH
KT
Visibility: M
M
M
M
RVR: M
M
M
Vertical visibility: 30's M (100's rn
Clouds: height of 30's M (100's rn
cloud base:
Air temperature;
Dew-point temperature: "C
QNH: hPa
Sea-surface temperature: "C
State of the sea: (no units)
Range
01 - 36
000-360
00 - 399'
00 - 199'
0000-0800
0800-5000
5000-9000
9 000 - 9 999
0000 - 0400
0400-0800
0800 - 2 000
000 - 020
000-050
-80 - +60
0850 - 1 100
' -10 - +40
0-9
1 - 399'
1 - 199'
0 - 800
800-5000
5-10
0-400
400 - 800
800-2000
0-600
0-2000
0- 1500
0-5000
-80 - +60
0500- 1 100
1
1
50
100
1
25
50
100
30
100
30
100
1
1
Annex 3 - Meteorological Service for International Air Navigation Appendix 3
Example A3-1. Routine report
a) Local routine report (same location and weather conditions as METAR):
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