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Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 21/JUL/2018
(Next update at 17:30 HKT 21/JUL/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE WEATHER IS GENERALLY FINE OVER SOUTHEASTERN
     CHINA.
     THE AREA OF LOW PRESSURE TO THE WEST OF LUZON
     HAS INTENSIFIED INTO A TROPICAL DEPRESSION.  AT
     NOON, THE TROPICAL DEPRESSION WAS CENTRED NEAR
     18.2 DEGREES NORTH, 119.4 DEGREES EAST.  IT IS
     FORECAST TO MOVE EAST-NORTHEAST AT ABOUT 12
     KNOTS ACROSS THE LUZON STRAIT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  TEMPO VRB/15G25 IN TS                34-29
   B.   2000 FT:  270/10                               25
   C.   5000 FT:  360/10                               20
   D.  10000 FT:  060/10                               12
   E.  18000 FT:  070/10                               MS2
   F.  24000 FT:  060/10                               MS13
   G.  30000 FT:  060/15                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE AND ISOLATED SHOWERS.  A FEW
      THUNDERSTORMS OVER INLAND.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.  TEMPO FEW CB 1000 FT  SCT 2000 FT
      BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 4000 M IN SHOWERS.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS.  MAINLY FINE AND ISOLATED SHOWERS.=
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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.