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 :
     TROPICAL STORM CHABA HAS INTENSIFIED INTO A
     SEVERE TROPICAL STORM.
     AT 4 A.M., TROPICAL STORM CHABA WAS LOCATED AT
     17.6 DEGREES NORTH, 114.7 DEGREES EAST. IT IS
     FORECAST TO MOVE NORTHWEST AT ABOUT 10 KNOTS IN
     THE GENERAL DIRECTION OF THE COAST OF WESTERN
     GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0400 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/20
                  TEMPO VRB/25G35 IN TS
       OFFSHORE:  090/25-30G40                         26-29
   B.   2000 FT:  090/25-30G40                         23
   C.   5000 FT:  090/30
                  BECMG 090/40                         19
   D.  10000 FT:  110/30
                  BECMG 110/40                         12
   E.  18000 FT:  100/20
                  BECMG 100/30                         MS1
   F.  24000 FT:  060/20-25                            MS10
   G.  30000 FT:  080/15-20                            MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH SQUALLY SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 3000 FT
      TEMPO FEW CB 600 FT SCT 1200 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 2500 M IN SHOWERS, TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 4.0-5.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     STRONG EASTERLY WINDS, OCCASIONALLY GALE FORCE
     OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH SQUALLY SHOWERS AND THUNDERSTORMS.
     SHOWERS WILL BE HEAVY AT TIMES.=

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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.