Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     GALE FORCE WINDS. SEV TURB AND SEV GUSTS. ISOL
     CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 9 A.M., THE TROPICAL DEPRESSION OVER THE
     CENTRAL AND NORTHERN PARTS OF THE SOUTH CHINA
     SEA WAS CENTRED NEAR 18.0 DEGREES NORTH 111.1
     DEGREES EAST, AND IS  FORECAST TO MOVE WEST OR
     WEST-NORTHWEST AT ABOUT 10 KNOTS TOWARDS THE
     VICINITY OF HAINAN ISLAND TO BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/20-25G35
                  TEMPO 120/25G35 IN TS
       OFFSHORE:  120/30-35G50                         27-30
   B.   2000 FT:  120/30-35G50                         23
   C.   5000 FT:  120/45                               19
   D.  10000 FT:  130/45                               12
   E.  18000 FT:  140/20                               0
   F.  24000 FT:  120/25                               MS10
   G.  30000 FT:  120/25                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH SQUALLY SHOWERS, SHOWERS WILL BE
      HEAVY AT TIMES. ISOLATED THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT BKN 6000 FT TEMPO FEW
      CB 800 FT SCT 2000 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 2000 M IN SHOWERS, TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 5.5-7.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG EAST TO SOUTHEASTERLY WINDS,
     OCCASIONALLY GALE OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH OCCASIONAL SQUALLY SHOWERS AND A FEW
     THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES.=

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Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
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Aviation Weather Observation and Forecast Information for Hong Kong International Airport

To know more about clouds, please see Commonly observed clouds in Hong Kong.