Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS. BESIDES, THE TROUGH OF LOW
     PRESSURE OVER CENTRAL CHINA IS EXPECTED TO EDGE
     CLOSER TO THE COASTAL AREAS OF SOUTHERN CHINA
     TOMORROW.
     AT 4 P.M., TROPICAL STORM CHOI-WAN WAS LOCATED
     NEAR 17.7 DEGREES NORTH, 118.1 DEGREES EAST. IT
     IS FORECAST TO MOVE  NORTH OR NORTH-NORTHEAST AT
     ABOUT 10 KNOTS TOWARDS THE VICINITY OF THE LUZON
     STRAIT AND THE SOUTHERN PART OF TAIWAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  190/5-10
       OFFSHORE:  200/10-15                            32-27
   B.   2000 FT:  210/10-15                            23
   C.   5000 FT:  230/15                               20
   D.  10000 FT:  250/15                               12
   E.  18000 FT:  260/15                               MS1
   F.  24000 FT:  250/10                               MS11
   G.  30000 FT:  250/10                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3800-4400 FT
   I. WEATHER       : 
      MAINLY FINE, BECOMING CLOUDY. ISOLATED SHOWERS,
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT    
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 12200 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHWESTERLY WINDS.
     SUNNY PERIODS. ISOLATED 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.