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 :
     AT 1 A.M., TROPICAL STORM RAI WAS LOCATED AT
     19.7 DEGREES NORTH, 112.6 DEGREES EAST. IT IS
     FORECAST TO MOVE NORTHEAST AT ABOUT 10 KNOTS PER
     HOUR ACROSS THE NORTHERN PART OF THE SOUTH CHINA
     SEA AND WEAKEN GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  020/15-20
       OFFSHORE:  040/25-30                            13-17
   B.   2000 FT:  080/30-35                            12
   C.   5000 FT:  120/25-30                            16
   D.  10000 FT:  180/30                               8
   E.  18000 FT:  200/35                               MS4
   F.  24000 FT:  230/30                               MS13
   G.  30000 FT:  230/25                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-4200 FT
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL RAIN.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 700 FT SCT 2000 FT BKN 8000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN RAIN.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 8400 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     FRESH NORTHEASTERLY WINDS,STRONG OFFSHORE AND ON
     HIGH GROUND AT FIRST.
     CLOUDY WITH OCCASIONAL RAIN. RAIN WILL BE EASE
     OFF LATER.=

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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.