Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  080/15-20                            22-20
   B.   2000 FT:  180/10-15                            18
   C.   5000 FT:  240/15                               15
   D.  10000 FT:  260/20                               7
   E.  18000 FT:  270/30                               MS5
   F.  24000 FT:  260/45                               MS17
   G.  30000 FT:  260/65                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH ONE OR TWO SHOWERS. A FEW
      THUNDERSTORMS. LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT SCT 3000 FT BKN 8000 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT
   K. VISIBILITY    : 8 KM, TEMPO 3000 M IN SHOWERS/MIST. TEMPO 2000 M IN THUNDERSTORMS.
   L. 0 DEG. C LEVEL: 14000, 14500, 15500 FT  10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. MOD OFFSHORE.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EAST TO SOUTHEASTERLY WINDS.
     MAINLY CLOUDY WITH ONE OR TWO SHOWERS. LOCALISED
     MIST/COASTAL FOG. SUNNY INTERVALS IN THE
     AFTERNOON.=

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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.