Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG. STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG.
     A COLD FRONT IS EXPECTED TO MOVE ACROSS THE
     REGION THIS MORNING.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  220/5
                  BECMG 360/15-20
       OFFSHORE:  220/5-10
                  BECMG 360/20-25                      20-17
   B.   2000 FT:  050/15-20                            20
   C.   5000 FT:  180/10                               14
   D.  10000 FT:  250/25                               11
   E.  18000 FT:  280/35                               1
   F.  24000 FT:  270/40                               MS10
   G.  30000 FT:  250/40                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      FOG PATCHES AT FIRST. MAINLY CLOUDY WITH ONE OR
      TWO RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 500 FT SCT 3500 FT
   K. VISIBILITY    : 10 KM, TEMPO 3000 M IN RAIN, TEMPO 400 M IN FOG
   L. 0 DEG. C LEVEL: 16500, 17500, 18500 FT  10 DEG. C LEVEL(S) : 10200 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     FRESH NORTHERLY WINDS, STRONG OFFSHORE AND ON
     HIGH GROUND.
     MAINLY CLOUDY WITH ONE OR TWO RAIN PATCHES.=

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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.