WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 26/SEP/2021
(Next update at 9:00-9:30 HKT 26/SEP/2021)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COASTAL
     AREAS OF GUANGDONG. AN UPPER-AIR DISTURBANCE IS
     EXPECTED TO BRING UNSETTLED WEATHER TO THE
     COASTAL AREAS OF GUANGDONG AND THE NORTHERN PART
     OF THE SOUTH CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  100/15-20, OCNL 25                   26-31
   B.   2000 FT:  090/20-25                            24
   C.   5000 FT:  090/20                               20
   D.  10000 FT:  110/15                               11
   E.  18000 FT:  100/20                               MS3
   F.  24000 FT:  110/20                               MS13
   G.  30000 FT:  120/15                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-3300 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND SQUALLY
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 4000 M IN SHOWERS, TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.
     MAINLY CLOUDY WITH ISOLATED SHOWERS AND
     THUNDERSTORMS.=
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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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