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Aerodrome Forecast (TAF)

TAF is a description of the meteorological elements expected at an airport for a forecast period.

The latest Aerodrome Forecast at the Hong Kong International Airport issued by the Hong Kong Observatory at 13:00 HKT on 23 Jul 17

TAF VHHH 230500Z 2306/2412 16015KT 9000 FEW015 SCT030 TX27/2306Z TX30/2406Z TN25/2323Z TEMPO 2306/2309 14015G25KT 2500 TSRA SHRA FEW008CB SCT020 BKN045 BECMG 2309/2311 10010KT TEMPO 2309/2315 VRB15G25KT 3000 -TSRA SHRA FEW012CB SCT020 TEMPO 2315/2324 3500 SHRA FEW015CB SCT025=

(Next update at: 19:00HKT 23/Jul/17)

Decoded TAF in plain language:-

Aerodrome forecast (TAF) valid between 06 UTC, 23 Jul 2017 and 12 UTC, 24 Jul 2017 issued by the Hong Kong Observatory :

Time Wind Visibility Weather Cloud Amount Cloud Base
Between 06 and 09 UTC, 23 Jul 2017 15 knots from 160 degrees (SSE) 9 km No significant weather
1 to 2 oktas
3 to 4 oktas
1500 feet
3000 feet
Temporarily between 06 and 09 UTC, 23 Jul 2017 15 knots, gusting to 25 knots from 140 degrees (SE) 2500 m Thunderstorm with moderate rain, Moderate showers of rain
1 to 2 oktas Cumulonimbus
3 to 4 oktas
5 to 7 oktas
800 feet
2000 feet
4500 feet
From 09 to 11 UTC, 23 Jul 2017, becoming 10 knots from 100 degrees (E) 9 km No significant weather
1 to 2 oktas
3 to 4 oktas
1500 feet
3000 feet
Temporarily between 09 and 15 UTC, 23 Jul 2017 15 knots, gusting to 25 knots direction variable 3000 m Thunderstorm with light rain, Moderate showers of rain
1 to 2 oktas Cumulonimbus
3 to 4 oktas
1200 feet
2000 feet
Temporarily between 15 and 24 UTC, 23 Jul 2017 10 knots from 100 degrees (E) 3500 m Moderate showers of rain
1 to 2 oktas Cumulonimbus
3 to 4 oktas
1500 feet
2500 feet

Time Temperature
06 UTC, 23 Jul 2017
Maximum27 oC
06 UTC, 24 Jul 2017
Maximum30 oC
23 UTC, 23 Jul 2017
Minimum25 oC

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.
  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.
To know more about the TAF code, please see Decoding TAF.
To know more about clouds, please see Commonly observed clouds in Hong Kong.
 
Aviation Weather Observation Information for Hong Kong International Airport Weather Forecast for Local Aviation
 
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