Weather Forecast for Local Aviation

I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  STORM FORCE WINDS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 1 A.M., TROPICAL STORM LIONROCK WAS CENTRED
     NEAR 20.2 DEGREES NORTH, 109.3 DEGREES EAST AND
     IS FORECAST TO MOVE WEST-NORTHWEST AT ABOUT 8
     KNOTS CROSSING BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  110/30-35
                  TEMPO 110/30G40 IN TS
       OFFSHORE:  110/35-40G50                         25-29
   B.   2000 FT:  100/40-45                            23
   C.   5000 FT:  110/50                               19
   D.  10000 FT:  140/40                               11
   E.  18000 FT:  150/30                               MS1
   F.  24000 FT:  150/25                               MS10
   G.  30000 FT:  160/25                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY TO OVERCAST WITH SQUALLS, SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2000 FT BKN 4000 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM. TEMPO 2000 M IN SHOWERS.
TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 10800 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 5.5-7.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     STRONG EAST TO SOUTHEASTERLY WINDS, OCCASIONALLY
     GALES OFFSHORE AND ON HIGH GROUND AT FIRST.
     CLOUDY TO OVERCAST WITH SQUALLS, SHOWERS AND
     THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES AT
     FIRST. SHOWERS WILL EASE OFF GRADUALLY 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.