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Aerodrome Forecast (TAF)
TAF is a description of the meteorological elements expected at an airport for a forecast period.
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The latest Aerodrome Forecast at the Hong Kong International Airport issued by the Hong Kong Observatory at 19:00 HKT on 16 May 12
TAF VHHH 161100Z 1612/1718 10010KT 9999 FEW010 SCT025 TX30/1706Z TN26/1623Z TEMPO 1618/1621 3000 SHRA FEW010CB SCT020 TEMPO 1621/1703 VRB15G25KT 2500 TSRA SHRA FEW008CB SCT020 TEMPO 1708/1712 4000 SHRA TEMPO 1716/1718 3500 SHRA FEW010CB SCT020=
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Decoded TAF in plain language:- Aerodrome forecast (TAF) valid between 12 UTC, 16 May 2012 and 18 UTC, 17 May 2012
issued by the Hong Kong Observatory :
| Time |
Wind |
Visibility |
Weather |
Cloud Amount |
Cloud Base |
| Between 12, 16 May 2012 and 18 UTC, 17 May 2012 |
10 knots from 100 degrees (E)
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10 km or above |
No significant weather |
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| Temporarily between 18 and 21 UTC, 16 May 2012 |
10 knots from 100 degrees (E)
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3000 m |
Moderate showers of rain |
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| Temporarily between 21 UTC, 16 May 2012 and 03 UTC, 17 May 2012 |
15 knots, gusting to 25 knots direction variable
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2500 m |
Thunderstorm with moderate rain, Moderate showers of rain |
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| Temporarily between 08 and 12 UTC, 17 May 2012 |
10 knots from 100 degrees (E)
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4000 m |
Moderate showers of rain |
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| Temporarily between 16 and 18 UTC, 17 May 2012 |
10 knots from 100 degrees (E)
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3500 m |
Moderate showers of rain |
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| Time | Temperature |
| 06 UTC, 17 May 2012 | |
| 23 UTC, 16 May 2012 | |
| okta(s): |
the international unit for reporting cloud amount. Cloud amount is assessed in total which is the estimated total apparent area of the sky covered with cloud. |
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1 okta is one-eighth of sky covered with cloud. 0 okta = sky clear, 1-2 oktas = few, 3-4 oktas = scattered, 5-7 oktas = broken and 8 oktas = overcast. |
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Aviation Weather 
