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 :
     AT 9 A.M., THE TROPICAL DEPRESSION OVER THE
     CENTRAL PART OF SOUTH CHINA SEA WAS CENTRED NEAR
     17.1 DEGREES NORTH 113.0 DEGREES EAST AND IS
     FORECAST TO MOVE NORTH OR NORTH-NORTHWEST AT
     ABOUT 10 KNOTS TOWARDS THE VICINITY OF WESTERN
     GUANGDONG AND HAINAN ISLAND, AND INTENSIFY
     GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/20-25
                  TEMPO VRB/20G35 IN TS
       OFFSHORE:  090/25-30                            27-29
   B.   2000 FT:  100/30-35                            23
   C.   5000 FT:  100/45                               18
   D.  10000 FT:  090/30                               12
   E.  18000 FT:  080/15                               MS3
   F.  24000 FT:  130/10                               MS12
   G.  30000 FT:  140/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH SQUALLY SHOWERS AND SEVERE SQUALLY
      THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3000 FT 
      TEMPO FEW CB 1000 FT SCT 2000 FT BKN 4000 FT.
   K. VISIBILITY    : 10 KM, TEMPO 4000 M IN SHOWERS, TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG EAST TO SOUTHEASTERLY WINDS,
     GALE OFFSHORE AND ON HIGH GROUND.
     CLOUDY TO OVERCAST 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.