Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS. ISOL
     CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     TYPHOON KOMPASU HAS WEAKENED INTO A SEVERE
     TROPICAL STORM.
     AT 6 P.M., KOMPASU WAS CENTRED NEAR 19.1 DEGREES
     NORTH, 109.9 DEGREES EAST AND IS FORECAST TO
     MOVE WEST AT ABOUT 12 KNOTS ACROSS HAINAN ISLAND.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1840 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  080/25-30G40
                  080/15-20G30 LATER
                  TEMPO 090/30G40 IN TS
       OFFSHORE:  080/35-40G50
                  080/25-30G40 LATER                   26-24
   B.   2000 FT:  110/35-40G50
                  110/25-30G40 LATER                   21
   C.   5000 FT:  110/40                               18
   D.  10000 FT:  110/45                               12
   E.  18000 FT:  110/50                               0
   F.  24000 FT:  110/40                               MS10
   G.  30000 FT:  110/40                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL HEAVY SQUALLY SHOWERS
      AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT BKN 4000 FT
      TEMPO FEW CB 600 FT SCT 1000 FT BKN 3500 FT
   K. VISIBILITY    : 10 KM. TEMPO 2000 M IN SHOWERS. TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 5.5-7.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS.
     MAINLY CLOUDY WITH OCCASIONAL SQUALLY SHOWERS
     AND 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.