Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS. 
     SUPER TYPHOON RAI HAS WEAKENED INTO A SEVERE
     TYPHOON.
     AT 4 P.M., RAI WAS LOCATED AT 14.2 DEGREES NORTH
     110.5 DEGREES EAST AND IS FORECAST TO MOVE NORTH
     AT ABOUT 10 KNOTS ACROSS THE CENTRAL PART OF
     THE SOUTH CHINA SEA AND WEAKEN GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  040/10-15
       OFFSHORE:  040/20-25                            18-14
   B.   2000 FT:  040/15-20                            12
   C.   5000 FT:  050/15                               11
   D.  10000 FT:  210/25                               8
   E.  18000 FT:  230/25                               MS1
   F.  24000 FT:  200/30                               MS13
   G.  30000 FT:  230/35                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3200-4000 FT
   I. WEATHER       : 
      CLOUDY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 4000 FT SCT 8000 FT
   K. VISIBILITY    : 9 KM.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 3000, 3400, 6000, 8400 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE. MOD NEAR HILLS.
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     FRESH NORTHEASTERLY WINDS, OCCASIONALLY STRONG
     OFFSHORE AND ON HIGH GROUND.
     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.