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Bulletin issued at 22:16 HKT 17/Jun/2017

At 10 p.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 94 per cent.

Though rainstorm warning has been cancelled, people should stay alert to the danger that may be brought about by river flooding.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 11:30 p.m. today. Isolated thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 24 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 24 degrees;
Tai Po 24 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 24 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 24 degrees;
Stanley 25 degrees;
Kwun Tong 24 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 24 degrees.

Between 8:45 and 9:45 p.m., lightning was detected within New Territories East, Hong Kong and Kowloon. The rainfall recorded in various regions were:

Sai Kung 27 to 45 mm;
North District 16 to 40 mm;
Kwun Tong 31 to 40 mm;
Eastern District 29 to 37 mm;
Tai Po 4 to 30 mm;
Wan Chai 25 to 29 mm;
Southern District 9 to 29 mm;
Yuen Long 12 to 29 mm;
Sha Tin 15 to 28 mm;
Kowloon City 14 to 28 mm;
Wong Tai Sin 18 to 26 mm;
Central & Western District 12 to 24 mm;
Yau Tsim Mong 16 to 24 mm;
Tuen Mun 8 to 15 mm;
Islands District 1 to 15 mm;
Sham Shui Po 7 to 10 mm;
Tsuen Wan 7 to 8 mm;
Kwai Tsing 5 to 8 mm.


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


Climatological Information for 17 Jun

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 22:25 HKT 17/Jun/2017

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

A trough of low pressure is bringing showers and thunderstorms to the northern part of the South China Sea and the coast of Guangdong. Locally, more than 30 millimetres of rainfall were generally recorded over the territory in the past couple of hours, and rainfall even exceeded 50 millimetres over Sai Kung.

Weather forecast for tonight and tomorrow

Cloudy with showers and a few thunderstorms. Temperatures will range between 24 and 29 degrees. Light to moderate southwesterly winds.

Outlook : Weather will still be unsettled with occasional thundery showers in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 18/06/2017; 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 17/Jun/2017

N0 WARNING.

GENERAL SITUATION AT 170900 UTC:
TROUGH 19N 107E 23N 115E 24N 120E 24N 125E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 171300 UTC:

HONG KONG= SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW UP TO 2 M. TEMP 25-29 C. =
KWANGTUNG= SW 5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW UP TO 2 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
BASHI= SW 5-6, OCNL 7. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL SW 2 M. =
PRATAS= SW 5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW UP TO 2 M. =
BALINTANG= SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW UP TO 2 M. =
SCARBOROUGH= SW 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW UP TO 2 M. =
PARACEL= S TO SW 5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL SW UP TO 2 M. =
TONKIN= NE 5, BEC SW 5. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2 M. =
DANANG= S TO SW 5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 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

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    Bulletin issued at 19:30 HKT 17/Jun/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 17 June 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    The unsettled weather associated with a trough of low pressure is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southwest force 4 to 5, occasionally force 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    Southwest force 5, occasionally force 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 4 to 5, occasionally force 6. Scattered squally showers and thunderstorms.

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

    Shantou Wind south-southwest force 2
      Visibility 18 Kilometres in showers

    Dongsha Wind southwest force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind west-southwest force 4

    Macau Wind southeast force 1
      Visibility 29 Kilometres

    Xisha Wind southwest force 5
      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 17:30 HKT 17/JUN/2017
    (Next update at 01:30 HKT 18/JUN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. ISOL CUNIM/TS AND
     ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE UNSETTLED WEATHER ASSOCIATED WITH A TROUGH
     OF LOW PRESSURE IS AFFECTING 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:  230/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  230/20-25                            26-24
   B.   2000 FT:  270/20-25                            23
   C.   5000 FT:  240/25                               19
   D.  10000 FT:  250/25                               11
   E.  18000 FT:  240/15                               MS3
   F.  24000 FT:  270/10                               MS12
   G.  30000 FT:  270/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND THUNDERSTORMS. SHOWERS
      WILL BE HEAVIER AT TIMES
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2000 FT  BKN 6000 FT.  TEMPO
      FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 2500 M IN SHOWERS.  TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS, OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 3.0-4.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH SOUTHWESTERLY WINDS. CLOUDY
     WITH SHOWERS AND THUNDERSTORMS. SHOWERS WILL BE
     HEAVIER AT TIMES IN THE MORNING.=

    ===================================================================
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 19:30 HKT on 17 Jun 17

    VHHK SIGMET 2 VALID 170730/171130 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1942 E11130 - N2124 E11130 - N2148 E11218 - N2336 E11730 - N2136 E11730 - N2024 E11530 - N1942 E11130 TOP FL400 MOV E 10KT NC= VHHK SIGMET 3 VALID 171130/171530 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1900 E11154 - N1930 E11130 - N2124 E11130 - N2230 E11342 - N2336 E11718 - N2036 E11606 - N1900 E11154 TOP FL400 MOV E 10KT 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 17/Jun/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.6 C
Minimum Air Temperature                     27.8 C
Grass Minimum Temperature                   26.5 C
Relative Humidity                        80 - 90 Percent
Rainfall                                    13.5 mm 
Total rainfall since 1st January           839.9 mm
Against an average of                      891.9 mm

Other Stations                Min                  Max
King's Park                  27.4 C               29.3 C
Wong Chuk Hang               25.6 C               28.7 C
Ta Kwu Ling                  24.7 C               30.3 C
Lau Fau Shan                 25.1 C               30.5 C
Tai Po                       25.1 C               29.1 C
Sha Tin                      25.8 C               29.9 C
Tuen Mun                     25.7 C               29.7 C
Tseung Kwan O                26.8 C               29.0 C
Sai Kung                     26.7 C               29.4 C
Cheung Chau                  26.6 C               29.0 C
Chek Lap Kok                 25.7 C               31.7 C
Tsing Yi                     26.2 C               29.9 C
Shek Kong                    25.7 C               30.4 C
Tsuen Wan Ho Koon            24.8 C               28.3 C
Tsuen Wan Shing Mun Valley   26.2 C               29.0 C
Hong Kong Park               27.0 C               29.5 C
Shau Kei Wan                 25.5 C               29.5 C
Kowloon City                 26.6 C               28.9 C
Happy Valley                 27.5 C               29.6 C
Wong Tai Sin                 26.6 C               29.1 C
Stanley                      26.3 C               28.9 C
Kwun Tong                    27.2 C               29.3 C
Sham Shui Po                 26.2 C               29.6 C
Kai Tak Runway Park          27.5 C               29.9 C
Yuen Long Park               25.2 C               30.7 C
Tai Mei Tuk               25.3 C               28.5 C

Duration of sunshine (King's Park):              0 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
 

Yesterday's (16 Jun 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.09
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 16 Jun
     2003copy right image | Important notices | Privacy policy Last revision date: <17 Jun 2017> 

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