Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE IS RISING OVER THE NORTHERN PART OF
     SOUTHERN CHINA. AN INTENSE NORTHEAST MONSOON IS
     EXPECTED TO REACH THE COASTAL AREAS OF SOUTHERN
     CHINA THIS MORNING. SUPER TYPHOON RAI HAS
     WEAKENED INTO A SEVERE TYPHOON. AT 1 A.M., RAI
     WAS LOCATED AT 10.2 DEGREES NORTH, 122.7 DEGREES
     EAST, IT IS FORECAST TO MOVE WEST AT ABOUT 28
     KILOMETRES PER HOUR ACROSS THE PHILIPPINES AND
     ENTER THE SOUTHERN PART OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  060/10-15
                  BECMG 360/15
       OFFSHORE:  060/15-20
                  BECMG 360/15-20                      19-24
   B.   2000 FT:  110/15-20                            19
   C.   5000 FT:  000/10                               14
   D.  10000 FT:  270/20                               12
   E.  18000 FT:  270/25                               0
   F.  24000 FT:  290/35                               MS14
   G.  30000 FT:  270/35                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT
   K. VISIBILITY    : 9 KM. TEMPO 4000 M IN RAIN PATCHES.
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.
     MAINLY CLOUDY. SUNNY PERIODS DURING THE DAY.=

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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.