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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 25/APR/2018
(Next update at 01:30 HKT 26/APR/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS. MEANWHILE, A BROAD BAND OF
     CLOUDS IS COVERING THE SOUTH CHINA COAST AND THE
     NORTHERN PART OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
       OFFSHORE:  090/20-25                            24-22
   B.   2000 FT:  100/15-20                            19
   C.   5000 FT:  100/10                               16
   D.  10000 FT:  270/10-15                            10
   E.  18000 FT:  260/15                               MS3
   F.  24000 FT:  250/20                               MS13
   G.  30000 FT:  260/30                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH A FEW ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  
     MAINLY CLOUDY WITH A FEW 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.