Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE OVER EASTERN CHINA IS RISING. AN
     EASTERLY AIRSTREAM IS EXPECTED TO REACH THE
     COAST OF GUANGDONG LATER TODAY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5
                  110/10-15 LATER
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  180/5-10
                  110/10-15 LATER                      31-26
   B.   2000 FT:  180/5-10                             22
   C.   5000 FT:  180/5                                18
   D.  10000 FT:  230/10                               10
   E.  18000 FT:  260/20                               MS4
   F.  24000 FT:  260/40                               MS16
   G.  30000 FT:  280/40                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS WITH A FEW SHOWERS. ISOLATED
      THUNDERSTORMS IN NORTH.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT TEMPO FEW CB 1500 FT SCT 3000 FT
   K. VISIBILITY    : 8 KM, TEMPO 3000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS, OCCASIONAL FRESH
     OFFSHORE.
     MAINLY CLOUDY WITH A FEW SHOWERS.=

===================================================================
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
===================================================================

Aviation Weather Observation and Forecast Information for Hong Kong International Airport

To know more about clouds, please see Commonly observed clouds in Hong Kong.