Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHEASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS. BESIDES, A COLD FRONT IS
     EXPECTED TO MOVE ACROSS THE REGION ON WEDNESDAY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  140/5-10
       OFFSHORE:  140/10-15                            24-30
   B.   2000 FT:  160/10-15                            22
   C.   5000 FT:  210/15                               19
   D.  10000 FT:  230/25                               12
   E.  18000 FT:  230/25                               MS3
   F.  24000 FT:  250/20                               MS14
   G.  30000 FT:  270/35                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE. LOCALISED FOG AT NIGHT AND IN THE
      MORNING.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 800 FT SCT 2000 FT
   K. VISIBILITY    : 8 KM, TEMPO 500 M IN FOG.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD NEAR HILLS AT FIRST
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS.
     MAINLY FINE AND LOCALISED MIST AT NIGHT.=

===================================================================
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.