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 COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1830 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10-15 TEMPO VRB/20G30 IN TS
       OFFSHORE:  060/20-25 OCNL 30                    22-19
   B.   2000 FT:  120/20-25 OCNL 30                    15
   C.   5000 FT:  190/15                               14
   D.  10000 FT:  250/20                               10
   E.  18000 FT:  250/45                               MS8
   F.  24000 FT:  280/50                               MS17
   G.  30000 FT:  270/70                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1800-2900 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH MIST PATCHES.  ISOLATED
      SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2000 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: 14500 FT      10 DEG. C LEVEL(S) : 7600, 8000, 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS 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.=

===================================================================
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
===================================================================

Aviation Weather Observation and Forecast Information for Hong Kong International Airport

To know more about clouds, please see Commonly observed clouds in Hong Kong.