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Bulletin issued at 01:02 HKT 17/Jun/2017

At 1 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 93 per cent.

Widespread heavy rain may affect Hong Kong in a couple of hours. Members of the public should be on the alert.


Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 3:30 a.m. today. Squally thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 25 degrees;
Tai Po 25 degrees;
Sha Tin 26 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 26 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 26 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 26 degrees;
Happy Valley 27 degrees;
Wong Tai Sin 26 degrees;
Stanley 28 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 25 degrees.

Between 11:45 p.m. and 0:45 a.m., lightning was detected over all regions. The rainfall recorded in various regions were:

Sha Tin 5 to 26 mm;
Kowloon City 0 to 25 mm;
Sai Kung 1 to 23 mm;
Sham Shui Po 12 to 22 mm;
Wong Tai Sin 10 to 21 mm;
Islands District 0 to 15 mm;
Tai Po 0 to 14 mm;
Yau Tsim Mong 0 to 11 mm;
Kwai Tsing 3 to 6 mm;
Southern District 0 to 5 mm;
Eastern District 2 to 4 mm;
Wan Chai 2 to 4 mm;
Central & Western District 0 to 3 mm;
Tuen Mun 0 to 3 mm;
Tsuen Wan 0 to 3 mm;
Kwun Tong 0 to 3 mm;
Yuen Long 0 to 2 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

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Hong Kong Climatology


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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 00:45 HKT 17/Jun/2017

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

A trough of low pressure affected Guangdong yesterday. Locally, it was mainly cloudy with showers and a few squally thunderstorms. More than 10 millimetres of rainfall were recorded over most parts of the territory, and rainfall even exceeded 70 millimetres over the eastern part of the New Territories. The trough of low pressure is expected to linger around the south China coast in the next couple of days, bringing heavy showers and thunderstorms to the region.

Weather forecast for Hong Kong

Cloudy with showers and squally thunderstorms. Showers will be heavy at times. Temperatures will range between 26 and 29 degrees. Moderate southwesterly winds, occasionally fresh at first.

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 today, 17/06/2017; 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 16/Jun/2017

N0 WARNING.

GENERAL SITUATION AT 160900 UTC:
TROUGH 20N 106E 24N 115E 25N 118E 24N 125E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 161300 UTC:

HONG KONG= SW 4-5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. TEMP 26-29 C. =
KWANGTUNG= SW 5, OCNL 6. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= NE 5-6, OCNL 7 LATER. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 2-3 M, UP TO 4 M LATER. =
BASHI= SW 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. =
PRATAS= SW 5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
BALINTANG= SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. =
SCARBOROUGH= SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
PARACEL= S TO SW 5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= NE 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

    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 16/Jun/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 16 June 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    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
    --------------------------------------------------------

    Waglan Island Wind southwest force 4
      Visibility 10 Kilometres

    Shantou Wind south force 2
      Visibility 30 Kilometres

    Dongsha Wind southwest force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind southwest force 4

    Macau Wind south-southwest force 2
      Visibility 11 Kilometres

    Xisha Wind south-southwest force 4
      Visibility 15 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 17/JUN/2017
    (Next update at 9:00-9:30 HKT 17/JUN/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
     CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING SHOWERS AND THUNDERSTORMS
     TO THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  230/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  230/15-20, OCNL 25                   26-30
   B.   2000 FT:  230/20-25                            24
   C.   5000 FT:  240/25                               20
   D.  10000 FT:  240/25                               11
   E.  18000 FT:  260/20                               MS3
   F.  24000 FT:  260/20                               MS14
   G.  30000 FT:  260/20                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH SHOWERS AND SQUALLY THUNDERSTORMS.
      SHOWERS WILL BE HEAVY AT TIMES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 2500 FT  BKN 10000 FT.  TEMPO
      FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM.  TEMPO 2500 M IN SHOWERS.  
                      TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11500 FT
   M. TURBULENCE    : MOD TO SEV
   N. SEA STATE     : 2.0-3.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHWESTERLY WINDS, FRESH AT TIMES. CLOUDY WITH
     SHOWERS AND SQUALLY THUNDERSTORMS. SHOWERS WILL BE HEAVY
     AT TIMES.=

    ===================================================================
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 23:30 HKT on 16 Jun 17

    VHHK SIGMET 3 VALID 161130/161530 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF N2230 AND W OF E11706 AND E OF E11424 TOP FL400 MOV E 10KT NC= VHHK SIGMET 4 VALID 161530/161930 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF LINE N2230 E11730 - N2042 E11130 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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