WEATHER FORECAST FOR LOCAL AVIATION

Weather Forecast for Local Aviation

Bulletin issued at 12:30 HKT 09/OCT/2021
(Next update at 17:30 HKT 09/OCT/2021)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     SEV TURB AND SEV GUSTS.  STORM FORCE WINDS. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AT NOON., TROPICAL STORM LIONROCK WAS CENTRED
     NEAR 19.6 DEGREES NORTH, 109.8 DEGREES EAST AND
     IS FORECAST TO MOVE NORTHWEST SLOWLY ACROSS
     HAINAN ISLAND AND INTO BEIBU WAN.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND (DIRECTION/KNOT)          TEMPERATURE (DEG. C)
   A.   SURFACE:  090/30-35
                  TEMPO 110/35G45 IN TS
       OFFSHORE:  100/40-45G55                         29-25
   B.   2000 FT:  120/45-50 OCNL 55G65                 22
   C.   5000 FT:  130/50                               18
   D.  10000 FT:  130/40                               10
   E.  18000 FT:  150/35                               MS1
   F.  24000 FT:  110/25                               MS10
   G.  30000 FT:  130/25                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY TO OVERCAST WITH SQUALLS, OCCASIONAL
      HEAVY RAIN AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT SCT 2000 FT BKN 5000 FT
      TEMPO FEW CB 800 FT SCT 1500 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM, TEMPO 2000 M IN SHOWERS,
TEMPO 1000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 10000, 10600, 11200 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 5.5-7.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     STRONG EAST TO SOUTHEASTERLY WINDS, OCCASIONALLY
     GALES OFFSHORE AND ON HIGH GROUND.
     CLOUDY TO OVERCAST WITH SQUALLS, OCCASIONAL
     HEAVY RAIN 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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