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Weather Information for South China Coastal Waters

Bulletin issued at 11:02 HKT 06/Sep/2016

At 11 a.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 98 per cent.
During the past hour the mean UV Index recorded at King's Park was 2. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 26 degrees;
Sha Tin 26 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 26 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 29 degrees;
Tsing Yi 27 degrees;
Shek Kong 26 degrees;
Tsuen Wan Ho Koon 26 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 26 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 27 degrees;
Stanley 26 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 27 degrees;
Kai Tak Runway Park 27 degrees;
Yuen Long Park 27 degrees.

Between 9:45 and 10:45 a.m., the rainfall recorded in various regions were:

Sha Tin 0 to 22 mm;
Sai Kung 0 to 18 mm;
Tsuen Wan 2 to 13 mm;
Tai Po 0 to 10 mm;
Tuen Mun 0 to 9 mm;
Yuen Long 0 to 9 mm;
North District 0 to 7 mm;
Wong Tai Sin 1 to 6 mm;
Kwai Tsing 0 to 3 mm;
Kowloon City 0 to 3 mm;
Kwun Tong 0 to 2 mm;
Islands District 0 to 1 mm.


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


Climatological Information for 6 Sep

Regional Weather in Hong Kong

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Hong Kong Climatology


Local Weather Forecast
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Bulletin updated at 10:45 HKT 06/Sep/2016

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

Showers and thunderstorms associated with a trough of low pressure are affecting the coast of Guangdong and the northern part of the South China Sea. Locally, showers this morning brought more than 20 millimetres of rainfall to Hong Kong Island. Meanwhile, an area of low pressure is bringing unsettled weather to the seas east of Taiwan.

Weather forecast for today

Cloudy with showers and isolated thunderstorms. Light winds, becoming moderate southerlies gradually.

Outlook : Still a few showers in the next couple of days.


(The above forecast period is valid up to 23:59 HKT today, 06/09/2016; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 06/Sep/2016

N0 WARNING.

GENERAL SITUATION AT 052100 UTC:
TROUGH 20N 107E 24N 120E N SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 060100 UTC:

HONG KONG= E TO SE 4, S TO SW 4-5 LATER. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. TEMP 30-27 C. =
KWANGTUNG= E TO SE 4-5, S TO SW 4-5 LATER. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= E TO NE 5, S TO SW 5 LATER. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2 M. SWELL NE 2 M. =
BASHI= SW 5-6, OCNL 7. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3 M. SWELL SW 2-3 M. =
PRATAS= SW 5-6. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2-3 M. =
BALINTANG= SW 5-6, OCNL 7. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3 M. SWELL SW 2-3 M. =
SCARBOROUGH= S TO SW 5, OCNL 6. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
PARACEL= SW 4-5. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW 2 M. =
TONKIN= W TO SW 4-5. 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SW 4-5. 2000 M IN SCT 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
  • Tidal Information

    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 09:30 HKT 06/Sep/2016

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 06 September 2016

    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:
    East to southeast force 4, becoming south to southwest force 4 to 5 later.
    Scattered squally showers and thunderstorms.
    Moderate seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East to southeast force 5, becoming south to southwest force 5 later.
    Scattered squally showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    East to southeast force 4 to 5, becoming south to southwest force 4 to 5 later.
    Scattered squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 4 to 5. Squally showers and thunderstorms.

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

    Waglan Island Wind variable force 1
      Visibility 10 Kilometres

    Shantou Wind north-northwest force 1
      Visibility 12 Kilometres

    Dongsha Wind south-southwest force 3
      Visibility 8 Kilometres in drizzle

    Huangmaozhou Wind southwest force 3

    Xisha Wind south-southwest force 4
      Visibility 21 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 06/SEP/2016
    (Next update at 17:30 HKT 06/SEP/2016)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A
     TROUGH OF LOW PRESSURE ARE AFFECTING THE COAST
     OF GUANGDONG AND THE NORTHERN PART OF THE SOUTH
     CHINA SEA.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
                  BEC 180/10-15
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  120/10-15
                  BECMG 180/15-20                      26-31
   B.   2000 FT:  120/10
                  BECMG 180/10                         22
   C.   5000 FT:  120/15
                  BECMG 180/10                         19
   D.  10000 FT:  110/15                               12
   E.  18000 FT:  090/15                               MS3
   F.  24000 FT:  080/15                               MS12
   G.  30000 FT:  070/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS. 
      LOCALIZED MIST AT FIRST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.  
      TEMPO FEW CB 1000 FT  SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN MIST. 
                      TEMPO 2500 M IN SHOWERS.  
                      TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 11400 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHERLY WINDS. 
     CLOUDY WITH 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 10:30 HKT on 06 Sep 16

    VHHK SIGMET 1 VALID 060230/060630 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1906 E11554 - N2006 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11500 - N2100 E11730 TOP FL450 MOV W 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

    Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
    Current Weather |  Local Weather Forecast |  9-day Weather Forecast
    South China Coastal Waters |  Marine Forecast
    Severe Weather Information Centre

    Bulletin issued at 21:30 HKT 19/Aug/2016


    Tropical Cyclone Warning

    At 191200 UTC, Tropical Storm Dianmu (1608) with central pressure 988 hectopascals was centred within 60 nautical miles of two zero point eight degrees north (20.8 N) one zero five point four degrees east (105.4 E) and is forecast to weaken and move west at about 14 knots for the next 24 hours.

    Maximum winds near the centre are estimated to be 35 knots.

    Radius of over 33 knot winds 60 nautical miles over eastern semicircle, 30 nautical miles elsewhere.
    Radius of over 2 metre waves 150 nautical miles.

    No further warnings on this Tropical Storm will be issued by the Hong Kong Observatory unless re-intensification takes place.

    Forecast position and intensity at 201200 UTC
    Dissipated over land.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    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 06/Sep/2016 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.2 C
Minimum Air Temperature                     25.8 C
Grass Minimum Temperature                   25.9 C
Relative Humidity                        80 - 98 Percent
Rainfall                                    75.3 mm 
Total rainfall since 1st January          2098.7 mm
Against an average of                     1958.7 mm

Other Stations                Min                  Max
King's Park                  25.4 C               29.1 C
Wong Chuk Hang               25.9 C               29.4 C
Ta Kwu Ling                  25.7 C               28.8 C
Lau Fau Shan                 25.1 C               29.2 C
Tai Po                       25.5 C               27.9 C
Sha Tin                      25.5 C               28.8 C
Tuen Mun                     25.5 C               29.9 C
Tseung Kwan O                25.4 C               27.9 C
Sai Kung                     25.8 C               28.2 C
Cheung Chau                  25.1 C               28.6 C
Chek Lap Kok                 25.7 C               31.6 C
Tsing Yi                     25.7 C               30.2 C
Shek Kong                    25.7 C               28.7 C
Tsuen Wan Ho Koon            25.0 C               28.1 C
Tsuen Wan Shing Mun Valley   25.3 C               29.2 C
Hong Kong Park               25.3 C               28.9 C
Shau Kei Wan                 25.0 C               28.8 C
Kowloon City                 25.5 C               29.3 C
Happy Valley                 25.9 C               30.1 C
Wong Tai Sin                 25.6 C               29.2 C
Stanley                      25.4 C               29.0 C
Kwun Tong                    25.7 C               28.8 C
Sham Shui Po                 25.8 C               30.5 C
Kai Tak Runway Park          25.6 C               29.5 C
Yuen Long Park               25.7 C               30.4 C

Duration of sunshine (King's Park):              0.4 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.
Sea surface temperature (Waglan Island):        // C 

Yesterday's (05 Sep 2016) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.09
Kat O                               0.09
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.13
Sha Tau Kok                         0.10
Kwun Tong                           0.12
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 during
the period 1987-2015, 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 05 Sep
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