Quantcast Figure 1-24. Reportable Visibility Values for TAFs

 

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CHAPTER ONE
METEOROLOGY FLIGHT PLANNING
the same notation as the METAR present weather group, described above in Figure 1-11. A
visibility code of "9999" indicates 7 miles visibility or greater is forecast, i.e. unlimited visibility.
When appropriate, RVRs will follow immediately after the prevailing visibility.
KNSE TAF 260909 28004KT 9000 HZ SCT020 SCT200 QNH2998INS
Figure 1-23 TAF Visibility Group
VISIBILITY CONVERSION TABLE - STATUE MILES TO METERS
Statute Miles
Meters
Statue Miles
Meters
Statute Miles
Meters
0
0
3/4
1200
1 7/8
3000
1/16
100
7/8
1400
2
3200
1/8
200
1
1600
2 1/4
3600
3/16
300
1 1/8
1800
2 1/2
4000
1/4
400
1 1/4
2000
3
4800
5/16
500
1 3/8
2200
4
6000a
3/8
600
1 1/2
2400
5
8000
1/2
800
1 5/8
2600
6
9000b
5/8
1000
1 3/4
2800
7
9999
Notes: a Rounded down from 6400m; b Rounded down from 9600m.
Figure 1-24 Reportable Visibility Values for TAFs
If any significant weather or an obstruction to vision is forecast (rain, snow, sleet, hail, blowing
dust, etc.), it will be included after visibility, using the codes in Figure 1-11. If there is no
significant weather, this group will be omitted.
Sky Condition Group
This group(s) will be included as often as necessary to indicate all forecast cloud layers­up to the
first overcast layer (8/8ths)­in ascending order of cloud bases, with lowest layer first (Figure 1-
25).
KNSE TAF 260909 28004KT 9000 HZ SCT020 SCT200 QNH2998INS
Figure 1-25 TAF Sky Condition Group
1-20  AVIATION ROUTINE WEATHER REPORTS AND TERMINAL AERODROME
FORECASTS


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