WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 09:45 HKT 18/SEP/2020
(Next update at 12:30 HKT 18/SEP/2020)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SHOWERS ARE AFFECTING THE COAST AREAS OF
     GUANGDONG AND THE NORTHERN PART OF THE SOUTH
     CHINA SEA. BESIDES, THE NORTHEAST MONSOON IS
     AFFECTING THE COASTAL AREAS OF GUANGDONG.
     
     AT 9 A.M., SEVERE TROPICAL STORM NOUL WAS
     LOCATED AT 16.1 DEGREES NORTH, 109.0 DEGREES
     EAST. IT IS FORECAST TO MOVE WEST AT ABOUT 15 KT
     TOWARDS THE CENTRAL PART OF VIETNAM.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/15-20
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  110/20-25, OCNL 30                   28-31
   B.   2000 FT:  110/25-30                            24
   C.   5000 FT:  120/30                               20
   D.  10000 FT:  130/30                               13
   E.  18000 FT:  140/20                               0
   F.  24000 FT:  150/20                               MS11
   G.  30000 FT:  120/20                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
      SQUALLY THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT
      TEMPO FEW CB 1000 FT SCT 2000 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 3000 M IN SHOWERS. 
                      TEMPO 1500 M IN TS
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 12400 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.5-4.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO SOUTHEASTERLY WINDS,
     OCCASIONALLY STRONG OFFSHORE AND ON HIGH GROUND. 
     MAINLY CLOUDY WITH OCCASIONAL HEAVY SHOWERS AND
     A FEW SQUALLY 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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