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Bulletin issued at 09:02 HKT 22/Aug/2018

At 9 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 82 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 29 degrees;
Lau Fau Shan 28 degrees;
Tai Po 29 degrees;
Sha Tin 29 degrees;
Tuen Mun 29 degrees;
Tseung Kwan O 30 degrees;
Sai Kung 29 degrees;
Cheung Chau 28 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 29 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 29 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 30 degrees;
Kowloon City 30 degrees;
Happy Valley 31 degrees;
Wong Tai Sin 30 degrees;
Stanley 29 degrees;
Kwun Tong 31 degrees;
Sham Shui Po 30 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 29 degrees.

Between midnight and 9 a.m. the minimum temperature was 27.5 degrees Celsius at the Hong Kong Observatory.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 22 Aug

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 08:45 HKT 22/Aug/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

Winds are light over the coast of Guangdong. A broad trough of low pressure is bringing showers to the northern part of the South China Sea.

At 8 a.m., Severe Typhoon Soulik was centred about 380 kilometres south-southeast of Jeju. It is forecast to move northwest at about 20 kilometres per hour towards the vicinity of the Korean Peninsula.

Weather forecast for today

Sunny periods and relatively low visibility. A few showers and isolated thunderstorms in the afternoon. The maximum temperature will be around 32 degrees. Light winds.

Outlook : A few showers and sunny intervals in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 22/08/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 22/Aug/2018

N0 WARNING.

GENERAL SITUATION AT 212100 UTC:
A SOUTHWESTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. TROUGH 20N 111E 21N 18E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= W TO SW 3-4. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. DOWN TO 4000 M IN SOME HAZE. TEMP 32-28 C. =
KWANGTUNG= W TO SW 4-5, OCNL 6 IN E. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M, UP TO 3 M IN E. SWELL S TO SW 2 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW 2 M. =
BASHI= SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PRATAS= SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
BALINTANG= SW 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
SCARBOROUGH= SW 6-7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M. SWELL SW 2 M. =
PARACEL= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TONKIN= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
DANANG= SW 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.


  • Map showing the 10 forecast areas
  • Tidal Information

    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 09:30 HKT 22/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 22 August 2018

    Warnings:
    Strong winds in Nan'ao.

    Weather Situation:
    A broad trough of low pressure is bringing unsettled weather to the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    West to southwest force 3 to 4.
    Isolated squally showers and thunderstorms, visibility relatively low in some areas.
    Slight to moderate seas.

    Nan'ao:
    West to southwest force 4 to 5, occasionally force 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shanwei:
    West to southwest force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    West to southwest force 4.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 4, occasionally force 5. Isolated squally showers and thunderstorms.

    Latest reports from south China coastal weather stations
    --------------------------------------------------------

    Waglan Island Wind variable force 1
      Visibility 8 Kilometres

    Shantou Wind southwest force 1
      Visibility 30 Kilometres

    Dongsha Wind west-northwest force 2
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind west-northwest force 3

    Macau Wind north-northwest force 1
      Visibility 8 Kilometres

    Xisha Wind southwest force 3
      Visibility 9 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 22/AUG/2018
    (Next update at 12:30 HKT 22/AUG/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A BROAD TROUGH OF LOW PRESSURE IS BRINGING
     UNSETTLED WEATHER TO THE SOUTH CHINA COASTAL
     AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  TEMPO VRB/15G25 IN TS                29-32
   B.   2000 FT:  300/10                               25
   C.   5000 FT:  300/5                                19
   D.  10000 FT:  010/15                               12
   E.  18000 FT:  050/15                               MS1
   F.  24000 FT:  080/5                                MS11
   G.  30000 FT:  060/5                                MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS WITH ISOLATED SHOWERS AND
      THUNDERSTORMS.  LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3500 M IN SHOWERS/MIST. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 11000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS.  MAINLY CLOUDY WITH ISOLATED
     SHOWERS AND THUNDERSTORMS.  LOCALIZED MIST/HAZE.=

    ===================================================================
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
===================================================================
    Aviation Weather Observation and Forecast Information for Hong Kong International Airport
    To know more about clouds, please see Commonly observed clouds in Hong Kong.

    sigmet
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    Significant Weather Information (SIGMET)

    The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

    The latest significant weather information
    issued by the Hong Kong Observatory at 08:42 HKT on 22 Aug 18

    VHHK SIGMET 1 VALID 220045/220445 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2318 E11730 - N2100 E11730 - N1642 E11400 - N1748 E11300 - N2118 E11254 - N2330 E11718 - N2318 E11730 TOP FL480 STNR NC= VHHK SIGMET 6 VALID 212045/220045 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1700 E11418 - N2048 E11318 - N2324 E11730 - N2100 E11730 TOP FL440 STNR NC=

    Please click here for more about the SIGMET

    Tropical Cyclone Warning
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    Tropical Cyclone Warning

    There is no tropical cyclone warning signal.

    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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    Yesterday's Weather and Radiation Level

    Bulletin issued at 00:25 HKT 22/Aug/2018 
    HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     30.2 C
Minimum Air Temperature                     26.7 C
Grass Minimum Temperature                   25.8 C
Relative Humidity                        77 - 94 Percent
Rainfall                                    25.7 mm 
Total rainfall since 1st January          1322.7 mm
Against an average of                     1775.5 mm

Other Stations                Min                  Max
King's Park                  26.1 C               30.6 C
Wong Chuk Hang               24.9 C               29.9 C
Ta Kwu Ling                  24.9 C               32.2 C
Lau Fau Shan                 24.3 C               31.9 C
Tai Po                       26.0 C               31.4 C
Sha Tin                      25.3 C               32.7 C
Tuen Mun                     25.0 C               31.7 C
Tseung Kwan O                25.1 C               32.4 C
Sai Kung                     26.3 C               31.2 C
Cheung Chau                  25.0 C               29.4 C
Chek Lap Kok                 26.2 C               32.4 C
Tsing Yi                     25.4 C               31.5 C
Shek Kong                    24.9 C               32.4 C
Tsuen Wan Ho Koon            24.7 C               28.7 C
Tsuen Wan Shing Mun Valley   25.1 C               31.3 C
Hong Kong Park               25.1 C               30.3 C
Shau Kei Wan                 26.4 C               31.7 C
Kowloon City                 25.8 C               31.7 C
Happy Valley                 25.5 C               31.7 C
Wong Tai Sin                 25.3 C               31.3 C
Stanley                      25.7 C               30.6 C
Kwun Tong                    26.6 C               32.4 C
Sham Shui Po                 25.9 C               31.7 C
Kai Tak Runway Park          26.4 C               31.6 C
Yuen Long Park               24.4 C               33.2 C
Tai Mei Tuk               25.8 C               33.5 C

Duration of sunshine (King's Park):              4.0 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
 

Yesterday's (21 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 21 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <22 Aug 2018> 

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