Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 9 A.M., THE TROPICAL DEPRESSION OVER THE
     NORTHWESTERN PART OF THE SOUTH CHINA SEA WAS
     CENTRED NEAR 18.4 DEGREES NORTH 110.1 DEGREES
     EAST AND IS FORECAST TO MOVE WEST OR
     WEST-NORTHWEST AT ABOUT 10 KNOTS ACROSS HAINAN
     ISLAND AND BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  110/15-20
                  TEMPO 110/25G35 IN TS
       OFFSHORE:  120/20-25                            27-31
   B.   2000 FT:  130/25-30, OCNL 35                   23
   C.   5000 FT:  130/25-30                            20
   D.  10000 FT:  130/30                               12
   E.  18000 FT:  130/25                               1
   F.  24000 FT:  130/20                               MS11
   G.  30000 FT:  120/15                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SQUALLY HEAVY
      SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT SCT 2500 FT, 
      TEMPO FEW CB 800 FT SCT 2000 FT BKN 4000 FT IN
      SHOWERS AND TS
   K. VISIBILITY    : 10 KM. TEMPO 2000 M IN SHOWERS AND TS.
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHEASTERLY WINDS. 
     MAINLY CLOUDY WITH OCCASIONAL 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.