WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 17/SEP/2020
(Next update at 12:30 HKT 17/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 :
     PRESSURE OVER CENTRAL CHINA IS RISING, THE
     NORTHEAST MONSOON IS EXPECTED TO AFFECT THE
     SOUTH CHINA COASTAL AREAS GRADUALLY TODAY. 
     AT 9 A.M., SEVERE TROPICAL STORM NOUL WAS
     LOCATED AT 14.7 DEGREES NORTH, 114.1 DEGREES
     EAST. IT IS FORECAST TO MOVE NORTHWEST OR
     WEST-NORTHWEST AT ABOUT 12 KT ACROSS THE CENTRAL
     PART OF THE SOUTH CHINA SEA AND INTENSIFY
     GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  110/20-25                            33-27
   B.   2000 FT:  080/30-35                            24
   C.   5000 FT:  090/35                               20
   D.  10000 FT:  120/30                               12
   E.  18000 FT:  110/20                               1
   F.  24000 FT:  110/15                               MS11
   G.  30000 FT:  120/15                               MS22
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND
      SQUALLY THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3000 FT
      TEMPO FEW CB 1000 FT SCT 2500 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 4000 M IN SHOWERS. TEMPO 2500 M IN TS
   L. 0 DEG. C LEVEL: 18500 FT      10 DEG. C LEVEL(S) : 11600 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE AND ON HIGH GROUND. 
     CLOUDY WITH OCCASIONAL SHOWERS AND 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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