Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     TROPICAL STORM CEMPAKA HAS INTENSIFIED INTO A
     SEVERE TROPICAL STORM.
     AT 8 P.M., CEMPAKA WAS CENTRED NEAR 21.1 DEGREES
     NORTH, 112.9 DEGREES EAST AND IS FORECAST TO
     MOVE NORTH SLOWLY, GRADUALLY EDGING CLOSER TO
     THE VICINITY OF THE AREA TO THE WEST OF THE
     PEARL RIVER ESTUARY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 2000 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/20-25
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  120/25-30, UP TO 35 IN  WEST         27-25
   B.   2000 FT:  120/25-30, OCNL 35                   22
   C.   5000 FT:  120/30                               19
   D.  10000 FT:  130/25                               12
   E.  18000 FT:  130/25                               MS1
   F.  24000 FT:  130/25                               MS11
   G.  30000 FT:  130/25                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH HEAVY SQUALLY SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM. TEMPO 3000 M IN SHOWERS. 
                      TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.5-6.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG EAST TO SOUTHEASTERLY WINDS.
     OCCASIONALLY GALE OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH HEAVY SQUALLY SHOWERS AND
     THUNDERSTORMS.=

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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.