Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB.  
     GALE FORCE WINDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE WINTER MONSOON IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  350/15-20
       OFFSHORE:  350/25-30 OCNL 35                    14-7
   B.   2000 FT:  350/25-30 OCNL 35                    6
   C.   5000 FT:  360/10                               4
   D.  10000 FT:  280/35                               3
   E.  18000 FT:  270/60                               1
   F.  24000 FT:  280/60                               MS11
   G.  30000 FT:  260/55                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY TO OVERCAST WITH LIGHT RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT SCT 6000 FT
   K. VISIBILITY    : 10 KM, TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 11500, 16500, 18500 FT  10 DEG. C LEVEL(S) : NEAR SURFACE, 400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-6.0 M     SEA TEMPERATURE    : 17 DEG
IV.  FURTHER OUTLOOK: 
     FRESH NORTHERLY WINDS, STRONG OFFSHORE.
     MAINLY FINE.=

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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.