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Bulletin issued at 21:02 HKT 19/Aug/2019

At 9 p.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 84 per cent.

The air temperatures at other places were:

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

Between 7:45 and 8:45 p.m., lightning was detected within Lantau. The rainfall recorded in various regions were:

Islands District 0 to 17 mm.


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


Climatological Information for 19 Aug

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 20:45 HKT 19/Aug/2019

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

The trough of low pressure over the northern part of the South China Sea is bringing showers to the region and Guangdong.

Weather forecast for tonight and tomorrow

Mainly cloudy with a few showers and isolated thunderstorms. Hot with sunny intervals during the day tomorrow. Temperatures will range between 27 and 32 degrees. Light to moderate south to southeasterly winds.

Outlook : Sunny intervals and a few showers in the following couple of days. The weather will be very hot later this week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 20/08/2019; 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 21:00 HKT 19/Aug/2019

N0 WARNING.

GENERAL SITUATION AT 190900 UTC:
TROUGH 21N 108E 22N 115E 25N 118E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 191300 UTC:

HONG KONG= S TO SE 4. ISOL SHOWERS AND TS. TEMP 27-32 C. =
KWANGTUNG= S TO SW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= NE 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
BASHI= SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PRATAS= SW 4-5. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
BALINTANG= SW 5-6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
SCARBOROUGH= SW 4-5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
PARACEL= S TO SW 4-5. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
TONKIN= NE 4-5. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= W TO SW 4-5. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 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.


  • Map showing the 10 forecast areas
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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 19:30 HKT 19/Aug/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 19 August 2019

    Weather Situation:
    A 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:
    South to southeast force 4.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    South to southwest force 4 to 5.
    Scattered showers and squally thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    South to southwesterly winds of force 4 to 5. Scattered showers and squally thunderstorms.

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

    Waglan Island Wind south-southwest force 1
      Visibility 46 Kilometres

    Shantou Wind east-southeast force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind west-southwest force 3

    Macau Wind south force 2
      Visibility 22 Kilometres

    Xisha Wind southwest force 3
      Visibility 14 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 17:30 HKT 19/AUG/2019
    (Next update at 01:30 HKT 20/AUG/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
     WEATHER TO THE SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  140/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  140/10-15                            31-27
   B.   2000 FT:  200/10-15
                  BECMG 040/10-15                      24
   C.   5000 FT:  070/15                               20
   D.  10000 FT:  080/10                               10
   E.  18000 FT:  040/15-20                            1
   F.  24000 FT:  030/20-25                            MS12
   G.  30000 FT:  330/10                               MS23
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT SCT 2500 FT
      TEMPO FEW 1000 FT SCT CB 1500 FT BKN 4000 FT
   K. VISIBILITY    : 9 KM. TEMPO 3500 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 19000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 26 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTH TO SOUTHEASTERLY WINDS.
     SUNNY INTERVALS. A FEW SHOWERS AND ISOLATED
     THUNDERSTORMS.=

    ===================================================================
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 18:46 HKT on 19 Aug 19

    VHHK SIGMET 3 VALID 191045/191445 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1922 E11610 - N1946 E11156 - N2124 E11116 - N2325 E11605 - N2238 E11730 - N2100 E11730 TOP FL430 STNR WKN=

    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 19/Aug/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.6 C
Minimum Air Temperature                     25.0 C
Grass Minimum Temperature                   26.0 C
Relative Humidity                        74 - 93 Percent
Rainfall                                    19.0 mm 
Total rainfall since 1st January          1705.8 mm
Against an average of                     1727.8 mm

Other Stations                Min                  Max
King's Park                  24.5 C               32.0 C
Wong Chuk Hang               23.9 C               30.9 C
Ta Kwu Ling                  24.8 C               33.3 C
Lau Fau Shan                 24.3 C               31.4 C
Tai Po                       24.6 C               33.1 C
Sha Tin                      25.3 C               32.3 C
Tuen Mun                     24.8 C               32.2 C
Tseung Kwan O                24.4 C               32.8 C
Sai Kung                     25.6 C               33.4 C
Cheung Chau                  23.7 C               30.5 C
Chek Lap Kok                 25.6 C               32.5 C
Tsing Yi                     25.2 C               31.5 C
Shek Kong                    24.6 C               33.4 C
Tsuen Wan Ho Koon            24.0 C               30.3 C
Tsuen Wan Shing Mun Valley   24.5 C               32.9 C
Hong Kong Park               24.6 C               32.4 C
Shau Kei Wan                 24.1 C               32.9 C
Kowloon City                 24.5 C               32.3 C
Happy Valley                 24.6 C               33.3 C
Wong Tai Sin                 25.1 C               32.5 C
Stanley                      24.0 C               31.0 C
Kwun Tong                    24.6 C               31.9 C
Sham Shui Po                 25.1 C               32.2 C
Kai Tak Runway Park          24.3 C               32.6 C
Yuen Long Park               25.1 C               33.7 C
Tai Mei Tuk               24.8 C               33.6 C

Duration of sunshine (King's Park):              4.9 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
 

Yesterday's (18 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                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.10
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.13

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 18 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <19 Aug 2019> 

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