WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 21/OCT/2021
(Next update at 17:30 HKT 21/OCT/2021)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT IS MOVING ACROSS THE COAST OF
     GUANGDONG AND BRINGING SHOWERS TO THE REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  360/15-20G25
       OFFSHORE:  360/20-25                            25-20
   B.   2000 FT:  040/15-20                            18
   C.   5000 FT:  240/10                               16
   D.  10000 FT:  270/20                               11
   E.  18000 FT:  270/20                               MS3
   F.  24000 FT:  300/15                               MS13
   G.  30000 FT:  260/20                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2500 FT BKN 5000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.
     CLOUDY TO OVERCAST WITH A FEW RAIN PATCHES.=
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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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