Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     AT 11 P.M. LAST NIGHT, SEVERE TROPICAL STORM
     ATSANI WAS LOCATED AT 20.5 DEGREES NORTH, 123.5
     DEGREES EAST. IT IS FORECAST TO MOVE WEST AT
     ABOUT 11 KNOTS TOWARDS THE LUZON STRAIT.
     MEANWHILE, TROPICAL STORM GONI WAS LOCATED AT
     14.0 DEGREES NORTH, 110.7 DEGREES EAST. IT IS
     FORECAST TO MOVE WEST AT ABOUT 5 KNOTS TOWARDS
     THE CENTRAL PART OF VIETNAM.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10
                  BECMG 360/10
       OFFSHORE:  090/15-20
                  BECMG 360/10-15                      21-28
   B.   2000 FT:  070/15-20                            18
   C.   5000 FT:  090/10                               15
   D.  10000 FT:  100/10                               11
   E.  18000 FT:  300/10                               MS2
   F.  24000 FT:  180/10                               MS13
   G.  30000 FT:  160/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4100-4400 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS. 
     MAINLY FINE.=

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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.