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 :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/10-15 TEMPO VRB/20G30 IN TS
       OFFSHORE:  090/20-25 OCNL 30                    19-23
   B.   2000 FT:  110/15-20 OCNL 25                    18
   C.   5000 FT:  180/10                               14
   D.  10000 FT:  280/20                               8
   E.  18000 FT:  260/35                               MS6
   F.  24000 FT:  270/55                               MS15
   G.  30000 FT:  270/70                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH MIST PATCHES. ISOLATED
      SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT SCT 3000 FT BKN 4500 FT
      TEMPO FEW CB 600 FT SCT 1200 FT BKN 3000 FT
   K. VISIBILITY    : 6 KM, TEMPO 2000 M IN SHOWERS/MIST, TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 14000 FT      10 DEG. C LEVEL(S) : 8400, 8600, 9000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE, NEAR HILLS AND  AT LOW LEVELS
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG EASTERLY WINDS. MAINLY CLOUDY
     WITH MIST PATCHES. 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.