WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 11/OCT/2021
(Next update at 01:30 HKT 12/OCT/2021)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  GALE FORCE WINDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT 4 P.M., SEVERE TROPICAL STORM KOMPASU WAS
     LOCATED AT 18.7 DEGREES NORTH, 122.5 DEGREES
     EAST. IT IS FORECAST TO MOVE WEST AT ABOUT 12
     KNOTS ACROSS THE VICINITY OF THE LUZON STRAIT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  010/15-20, OCNL 25
       OFFSHORE:  010/20-25, OCNL 30G40                31-24
   B.   2000 FT:  010/30-35, OCNL 40G50                22
   C.   5000 FT:  040/35                               18
   D.  10000 FT:  030/30                               12
   E.  18000 FT:  040/40                               0
   F.  24000 FT:  030/40                               MS10
   G.  30000 FT:  040/25                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2500 FT
   K. VISIBILITY    : 10 KM
   L. 0 DEG. C LEVEL: 18000 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 3.0-5.0 M     SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     FRESH TO STRONG NORTH TO NORTHEASTERLY WINDS,
     GALES OFFSHORE AND ON HIGH GROUND.
     MAINLY FINE.=
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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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