Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0400 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/25-30G40
                  BECMG 360/15-20
       OFFSHORE:  090/35-40G50
                  BECMG 360/20-25                      16-19
   B.   2000 FT:  090/35-40G50
                  BECMG 360/20-25                      13
   C.   5000 FT:  140/40-45, OCNL50                    12
   D.  10000 FT:  180/40                               6
   E.  18000 FT:  230/50                               MS7
   F.  24000 FT:  230/65                               MS18
   G.  30000 FT:  230/80                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1800-2400 FT
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL RAIN. RAIN WILL BE HEAVY AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 4000 FT
   K. VISIBILITY    : 9 KM. TEMPO 3000 M IN  RAIN.
   L. 0 DEG. C LEVEL: 12500, 13500, 15000 FT  10 DEG. C LEVEL(S) : 6400 FT
   M. TURBULENCE    : SEV
   N. SEA STATE     : 6.5-8.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTHERLY WINDS. CLOUDY WITH OCCASIONAL RAIN.=

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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.