WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 06/AUG/2021
(Next update at 9:00-9:30 HKT 06/AUG/2021)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS, SEV TURB AND SEV GUSTS.
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 11 P.M. LAST NIGHT, TROPICAL STORM LUPIT WAS
     CENTRED NEAR 23.8 DEGREES NORTH, 117.3 DEGREES
     EAST.  IT IS FORECAST TO MOVE NORTH SLOWLY
     ACROSS THE COASTAL AREAS OF FUJIAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  250/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  250/20-25G35                         28-26
   B.   2000 FT:  290/20-25G35                         25
   C.   5000 FT:  310/20                               20
   D.  10000 FT:  310/20                               13
   E.  18000 FT:  310/25                               0
   F.  24000 FT:  330/20                               MS8
   G.  30000 FT:  360/15                               MS20
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL SHOWERS AND SQUALLY
      THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT 
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT.
   K. VISIBILITY    : 9 KM. TEMPO 3000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 12200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS, STRONG
     OFFSHORE AND ON HIGH GROUND.
     CLOUDY WITH OCCASIONAL SHOWERS AND SQUALLY
     THUNDERSTORMS. SHOWERS WILL BE HEAVY AT TIMES.=
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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.


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