Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS. FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING SHOWERS AND
     THUNDERSTORMS TO GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  TEMPO VRB/15G25 IN TS
                  BECMG 040/10-15 LATER
       OFFSHORE:  040/15-20                            20-18
   B.   2000 FT:  240/15-20
                  BECMG 030/15-20 LATER                19
   C.   5000 FT:  230/20
                  360/5 LATER                          16
   D.  10000 FT:  250/25                               8
   E.  18000 FT:  250/45                               MS7
   F.  24000 FT:  260/55                               MS16
   G.  30000 FT:  260/55                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1100-2200 FT
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS. ISOLATED
      THUNDERSTORMS AND LOCALISED MIST/FOG AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2000 FT BKN 5000 FT TEMPO FEW
      CB 800 FT SCT 1200 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM, TEMPO 2000 M IN SHOWERS/MIST/TS, TEMPO 800 M IN FOG.
   L. 0 DEG. C LEVEL: 13500 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 20 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLY WINDS. 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.