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Bulletin issued at 01:02 HKT 22/Aug/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 28 degrees Celsius and the relative humidity 88 per cent.

The air temperatures at other places were:

King's Park 28 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 28 degrees;
Sha Tin 28 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 27 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 27 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 28 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 28 degrees;
Stanley 27 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 26 degrees;
Tai Mei Tuk 27 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 00:45 HKT 22/Aug/2018

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

Winds were light over the coast of Guangdong yesterday. A broad trough of low pressure brought showers to the northern part of the South China Sea. Locally, it was mainly cloudy with a few showers and relatively low visibility. Showers were heavier over parts of the territory and there were isolated thunderstorms in the afternoon. More than 10 millimetres of rainfall were recorded over the urban areas, New Territories West and Lantau Island, and rainfall even exceeded 30 millimetres over Wan Chai. The broad trough of low pressure is expected to linger over the northern part of the South China Sea and the south China coast this week, bringing showers to the region.

At 11 p.m. last night, Severe Typhoon Soulik was centred about 270 kilometres south-southwest of Kagoshima. It is forecast to move west-northwest at about 22 kilometres per hour across the seas south of Kyushu of Japan.

Weather forecast for Hong Kong

Mainly cloudy with a few showers and isolated thunderstorms. Sunny periods during the day. Visibility will be relatively low. Temperatures will range between 27 and 32 degrees. Light winds.

Outlook : A few showers and sunny intervals in the following 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 21:00 HKT 21/Aug/2018

N0 WARNING.

GENERAL SITUATION AT 210900 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 211300 UTC:

HONG KONG= SW 3, OCNL 4. ISOL SHOWERS AND TS. DOWN TO 4000 M IN SOME HAZE. TEMP 27-32 C. =
KWANGTUNG= SW 4, UP TO 5 IN E. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M IN E. SWELL S TO SW 2 M. =
TAIWAN STRAIT= S TO SW 4-5, OCNL 6. DOWN TO 4000 M IN ISOL 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 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL S TO SW 2 M. =
TONKIN= 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.


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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 23:30 HKT 21/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 21 August 2018

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

    At 11 p.m., Severe Typhoon Soulik with maximum sustained winds of about 165 kilometres per hour near its centre was located near 29.4 degrees north, 129.3 degrees east. It is forecast to move west-northwest at about 22 kilometres per hour across the seas south of Kyushu of Japan.

    Area forecasts for the next 24 hours

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

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

    Shanwei:
    Southwest force 4.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    Southwest force 4.
    Isolated 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 west-southwest force 2
      Visibility 14 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 30 Kilometres

    Dongsha Wind west force 2
      Visibility 9 Kilometres in rain

    Huangmaozhou Wind west-southwest force 2

    Macau Wind south force 2
      Visibility 4900 Metres in mist

    Xisha Wind southwest force 4
      Visibility 13 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 22/AUG/2018
    (Next update at 9:00-9:30 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
     SHOWERS TO THE SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  TEMPO VRB/15G25 IN TS                27-32
   B.   2000 FT:  300/10                               25
   C.   5000 FT:  060/10                               20
   D.  10000 FT:  040/15                               12
   E.  18000 FT:  050/15                               MS3
   F.  24000 FT:  060/20                               MS12
   G.  30000 FT:  090/10                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-2800 FT
   I. WEATHER       : 
      MAINLY CLOUDY 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: 16500 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 1.0 M         SEA TEMPERATURE    : 29 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS.  SUNNY PERIODS 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 00:35 HKT on 22 Aug 18

    VHHK SIGMET 4 VALID 211245/211645 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2118 E11730 - N2100 E11730 - N1700 E11418 - N2006 E11336 - N2136 E11642 - N2118 E11730 TOP FL430 STNR NC= VHHK SIGMET 5 VALID 211645/212045 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11730 - N2100 E11730 - N1642 E11400 - N1742 E11306 - N2236 E11600 - N2242 E11630 - N2142 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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