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Bulletin issued at 16:26 HKT 22/Aug/2018

At 4 p.m. at the Hong Kong Observatory the air temperature was 32 degrees Celsius and the relative humidity 68 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Hot weather might cause adverse health effects. The Observatory advises the public to stay on the alert.

Please be reminded that:

The Thunderstorm Warning was issued at 4:25 p.m. It will remain effective until 6:00 p.m. today. Isolated thunderstorms are expected to occur over New Territories.

The air temperatures at other places were:

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

Between 2:45 and 3:45 p.m., the rainfall recorded in various regions were:

North District 0 to 1 mm.


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


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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 16:15 HKT 22/Aug/2018

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

The convective activities triggered by high temperatures are bringing thundery showers to the coast of Guangdong. Meanwhile, the area of low pressure over the northeastern part of the South China Sea is bringing unsettled weather to the region.

At 4 p.m., Severe Typhoon Soulik was centred about 230 kilometres south of Jeju. It is forecast to move northwest at about 20 kilometres per hour towards the vicinity of the Korean Peninsula. Meanwhile, Severe Typhoon Cimaron was centred about 1000 kilometres southeast of Kagoshima. It is forecast to move northwest or north-northwest at about 32 kilometres per hour in the general direction of Japan.

Weather forecast for tonight and tomorrow

Becoming cloudy with a few showers and isolated thunderstorms. Sunny intervals tomorrow. Temperatures will range between 27 and 31 degrees. Light winds.

Outlook : Still some showers in the following few of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 23/08/2018; 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 13:00 HKT 22/Aug/2018

N0 WARNING.

GENERAL SITUATION AT 212100 UTC:
A SOUTHWESTERLY AIRSTREAM IS GENERALLY AFFECTING THE FORECAST AREAS. TROUGH 20N 111E 21N 118E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 220500 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.


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  • 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 16:30 HKT 22/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 22 August 2018

    Warnings:
    Strong winds in Nan'ao.

    Weather Situation:
    The convective activities triggered by high temperatures are bringing thundery showers to the south China coast. Meanwhile, the area of low pressure over the northeastern part of the South China Sea is bringing unsettled weather to the region.

    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 to 5. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 4
      Visibility 10 Kilometres

    Shantou Wind north-northeast force 1
      Visibility 30 Kilometres

    Dongsha Wind west-northwest force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind west-northwest force 2

    Macau Wind east force 1
      Visibility 6 Kilometres

    Xisha Wind southwest force 4
      Visibility 12 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 12:30 HKT 22/AUG/2018
    (Next update at 17:30 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 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  TEMPO VRB/15G25 IN TS                32-28
   B.   2000 FT:  300/10                               25
   C.   5000 FT:  300/10                               19
   D.  10000 FT:  010/15                               12
   E.  18000 FT:  050/15                               MS1
   F.  24000 FT:  080/10                               MS11
   G.  30000 FT:  060/10                               MS21
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      SUNNY PERIODS WITH ISOLATED SHOWERS AND
      THUNDERSTORMS.  LOCALIZED MIST/HAZE.
   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/HAZE. 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 12:40 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 2 VALID 220445/220845 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1824 E11230 - N2048 E11506 - N2230 E11354 - N2400 E11730 - N2100 E11730 TOP FL480 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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