Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS, SEV TURB AND SEV GUSTS. ISOL
     CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT NOON, TROPICAL STORM LUPIT WAS CENTRED NEAR
     21.4 DEGREES NORTH, 115.7 DEGREES EAST AND IS
     FORECAST TO MOVE EAST-NORTHEAST AND THEN TRACK
     NORTHEAST LATER AT ABOUT 5 KNOTS ACROSS THE
     COASTAL WATERS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  340/15G25
                  TEMPO VRB/15G30 IN TS
       OFFSHORE:  350/25-30G40                         32-27
   B.   2000 FT:  350/20-25G35                         25
   C.   5000 FT:  030/25                               19
   D.  10000 FT:  040/25                               12
   E.  18000 FT:  050/30                               1
   F.  24000 FT:  050/25                               MS9
   G.  30000 FT:  050/25                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL HEAVY SQUALLY
      SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT. 
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 2000 M IN SHOWERS. TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     FRESH WEST TO NORTHWESTERLY WINDS, STRONG
     OFFSHORE.
     CLOUDY WITH OCCASIONAL HEAVY SQUALLY SHOWERS AND
     ISOLATED THUNDERSTORMS.=

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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.