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Bulletin issued at 17:02 HKT 22/Aug/2019

At 5 p.m. at the Hong Kong Observatory the air temperature was 32 degrees Celsius and the relative humidity 70 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 31 degrees;
Wong Chuk Hang 31 degrees;
Ta Kwu Ling 32 degrees;
Lau Fau Shan 31 degrees;
Tai Po 31 degrees;
Sha Tin 33 degrees;
Tuen Mun 31 degrees;
Tseung Kwan O 30 degrees;
Sai Kung 31 degrees;
Chek Lap Kok 33 degrees;
Tsing Yi 30 degrees;
Shek Kong 33 degrees;
Tsuen Wan Ho Koon 30 degrees;
Tsuen Wan Shing Mun Valley 32 degrees;
Hong Kong Park 31 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 32 degrees;
Happy Valley 32 degrees;
Wong Tai Sin 32 degrees;
Stanley 31 degrees;
Kwun Tong 31 degrees;
Sham Shui Po 31 degrees;
Kai Tak Runway Park 30 degrees;
Yuen Long Park 32 degrees;
Tai Mei Tuk 30 degrees.


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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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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Bulletin updated at 16:45 HKT 22/Aug/2019

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

Convective activities triggered by high temperatures are affecting Guangdong. Locally, it was very hot in the afternoon. Temperatures over the territory generally rose to around 33 degrees.

At 4 p.m., Tropical Storm Bailu was centred about 1140 kilometres southeast of Gaoxiong. It is forecast to move northwest at about 18 kilometres per hour across the western North Pacific towards the vicinity of Taiwan.

Weather forecast for tonight and tomorrow

Become cloudy with a few showers. Very hot with sunny periods and haze tomorrow. There will be isolated thunderstorms later. Temperatures will range between 28 and 33 degrees. Light winds.

Outlook : Still very hot with isolated showers on Saturday. More showers on Sunday.


(The above forecast period is valid up to 23:59 HKT tomorrow, 23/08/2019; 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/2019

GALE WARNING AREAS: BASHI AND BALINTANG.

GENERAL SITUATION AT 212100 UTC:
TROUGH 20N 117E 21N 121E QSTNR. TROPICAL STORM BAILU (1911) 994 HPA 16N 130E NW 10KT INTST NC.

MARINE FORECAST FOR 24 HOURS FROM 220100 UTC:

HONG KONG= S TO SE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. TEMP 32-28 C. =
KWANGTUNG= S TO SE 4-5, NW 4-5 IN E. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TAIWAN STRAIT= N TO NW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
BASHI= W TO NW 4-5, UP TO 8 IN E LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2 M, UP TO 6 M LATER. SWELL SW 2 M. =
PRATAS= NW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
BALINTANG= W TO NW 5-6, UP TO 8 IN E LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 6 M LATER. SWELL SW 2 M. =
SCARBOROUGH= W TO SW 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 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= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 2 M. =
DANANG= SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S UP TO 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.


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    • 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 16:30 HKT 22/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 22 August 2019

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

    At 4 p.m., Tropical Storm Bailu with maximum sustained winds of about 85 kilometres per hour near its centre was located at 15.7 degrees north, 128.3 degrees east. It is forecast to move northwest at about 18 kilometres per hour across the western North Pacific towards the vicinity of Taiwan.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southeast force 4.
    Isolated squally showers and thunderstorms. Some haze tomorrow.
    Moderate seas.

    Nan'ao and Shanwei:
    North to northwest force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    South to southeast force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    West to southwesterly winds of force 4 to 5, northwesterly winds of force 6 to 7 in east. Scattered heavy squally showers and thunderstorms.

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

    Waglan Island Wind east-southeast force 2
      Visibility 21 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Dongsha Wind north force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-southeast force 2

    Macau Wind east-southeast force 1
      Visibility 24 Kilometres

    Xisha Wind south-southwest force 2
      Visibility 14 Kilometres

  • Explanation of Seas or Sea Waves
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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 12:30 HKT 22/AUG/2019
    (Next update at 17:30 HKT 22/AUG/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE WEATHER IS MAINLY FINE OVER SOUTHEASTERN
     CHINA. MEANWHILE, THE TROUGH OF LOW PRESSURE
     OVER THE NORTHERN PART OF THE SOUTH CHINA SEA IS
     BRINGING SHOWERS TO THE REGION.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1600 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  110/10                               33-29
   B.   2000 FT:  060/10                               25
   C.   5000 FT:  120/10                               20
   D.  10000 FT:  100/10                               11
   E.  18000 FT:  080/10                               MS3
   F.  24000 FT:  150/10                               MS14
   G.  30000 FT:  160/15                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY FINE. ISOLATED SHOWERS AND THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT
      TEMPO FEW 1000 FT SCT CB 2000 FT BKN 4000 FT
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. 
                      TEMPO 2000 M IN TS
   L. 0 DEG. C LEVEL: 17100 FT      10 DEG. C LEVEL(S) : 10500 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS. MAINLY FINE.=

    ===================================================================
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 14:26 HKT on 22 Aug 19

    VHHK SIGMET 2 VALID 220625/221025 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1906 E11557 - N1742 E11449 - N1740 E11309 - N1916 E11142 - N2107 E11144 - N2131 E11324 - N1906 E11557 TOP FL490 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 00:15 HKT 22/Aug/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.8 C
Minimum Air Temperature                     27.6 C
Grass Minimum Temperature                   27.4 C
Relative Humidity                        61 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          1705.9 mm
Against an average of                     1775.5 mm

Other Stations                Min                  Max
King's Park                  26.9 C               32.5 C
Wong Chuk Hang               26.4 C               32.8 C
Ta Kwu Ling                  25.5 C               34.0 C
Lau Fau Shan                 25.2 C               32.6 C
Tai Po                       25.9 C               31.9 C
Sha Tin                      27.0 C               33.3 C
Tuen Mun                     24.8 C               32.7 C
Tseung Kwan O                25.6 C               32.5 C
Sai Kung                     27.1 C               33.3 C
Cheung Chau                  25.7 C               33.1 C
Chek Lap Kok                 25.8 C               34.5 C
Tsing Yi                     26.8 C               33.4 C
Shek Kong                    24.9 C               34.0 C
Tsuen Wan Ho Koon            24.7 C               30.9 C
Tsuen Wan Shing Mun Valley   26.1 C               33.6 C
Hong Kong Park               26.9 C               32.7 C
Shau Kei Wan                 26.2 C               31.5 C
Kowloon City                 26.9 C               33.7 C
Happy Valley                 27.5 C               33.4 C
Wong Tai Sin                 27.4 C               33.2 C
Stanley                      26.8 C               32.1 C
Kwun Tong                    26.8 C               31.9 C
Sham Shui Po                 27.4 C               33.7 C
Kai Tak Runway Park          27.1 C               31.7 C
Yuen Long Park               24.9 C               34.5 C
Tai Mei Tuk               26.2 C               33.6 C

Duration of sunshine (King's Park):              9.7 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 10.
 

Yesterday's (21 Aug 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.14 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                         0.11
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
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 2019> 

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