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 :
     TROPICAL STORM RAI HAS WEAKENED INTO A TROPICAL
     DEPRESSION.
     AT 6 A.M., RAI WAS LOCATED AT 20.4 DEGREES
     NORTH, 113.5 DEGREES EAST. IT IS FORECAST TO
     MOVE NORTHEAST OR EAST-NORTHEAST AT ABOUT 12
     KNOTS PER HOUR ACROSS THE NORTHERN PART OF THE
     SOUTH CHINA SEA AND CONTINUE TO WEAKEN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0700 TO 1700 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  020/15-20
       OFFSHORE:  040/25-30                            13-17
   B.   2000 FT:  080/30                               12
   C.   5000 FT:  140/35                               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 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.