Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A MARITIME AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  140/5-10                             21-25
   B.   2000 FT:  170/15-20                            19
   C.   5000 FT:  230/25                               17
   D.  10000 FT:  240/20                               11
   E.  18000 FT:  250/30                               MS5
   F.  24000 FT:  250/40                               MS17
   G.  30000 FT:  260/50                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      800-1400 FT, 4300-5000 FT
   I. WEATHER       : 
      MAINLY CLOUDY. LOCALIZED MIST/FOG.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 400 FT SCT 1500 FT
   K. VISIBILITY    : 6 KM, TEMPO 2000 M IN MIST, TEMPO 600 M IN FOG.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 10200 FT
   M. TURBULENCE    : MOD NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHERLY WINDS.  SUNNY
     PERIODS.=

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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.