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Bulletin issued at 04:02 HKT 03/Sep/2018

At 4 a.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

King's Park 26 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 25 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 26 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 26 degrees;
Stanley 25 degrees;
Kwun Tong 26 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 25 degrees.


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


Climatological Information for 3 Sep

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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Bulletin updated at 03:45 HKT 03/Sep/2018

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

An anticyclone aloft is covering southeastern China.

At 2 a.m., Super Typhoon Jebi was centred about 1030 kilometres south of Osaka. It is forecast to move north-northwest at about 20 kilometres per hour across the western North Pacific.

Weather forecast for today

Mainly cloudy with one or two showers. Sunny periods during the day. Temperatures will range between 26 and 31 degrees. Light to moderate south to southwesterly winds.

Outlook : Sunny periods on Tuesday. A few showers in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 03/09/2018; 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 21:00 HKT 02/Sep/2018

N0 WARNING.

GENERAL SITUATION AT 020900 UTC:
TROUGH 20N 106E 21N 108E 22N 112E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 021300 UTC:

HONG KONG= S TO SW 4, BEC 5 TOMORROW. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M LATER. TEMP 26-31 C. =
KWANGTUNG= S TO SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL E UP TO 2 M LATER. =
TAIWAN STRAIT= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BASHI= SE 4-5, BEC SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 2-3 M. =
PRATAS= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 2 M. =
BALINTANG= SE 4-5, BEC SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E 2-3 M. =
SCARBOROUGH= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO NE 2 M LATER. =
PARACEL= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL E UP TO 2 M LATER. =
TONKIN= S 4-5, OCNL 6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 3 M. =
DANANG= S 4-5. DOWN TO 4000 M IN ISOL 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

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 03:30 HKT 03/Sep/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 03 September 2018

    Weather Situation:
    A southerly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South to southwest force 4, becoming force 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Nan'ao:
    Southwest force 4 to 5.
    Moderate seas.

    Shanwei and South of Hong Kong:
    South to southwest force 4 to 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    South force 4 to 5.
    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 calm
      Visibility 17 Kilometres

    Shantou Wind west force 1
      Visibility 27 Kilometres

    Dongsha Wind west-southwest force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind south-southeast force 3

    Macau Wind southwest force 1
      Visibility 14 Kilometres

    Xisha Wind south force 2
      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
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 03/SEP/2018
    (Next update at 9:00-9:30 HKT 03/SEP/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  180/5-10                             24-30
   B.   2000 FT:  180/10                               22
   C.   5000 FT:  250/10                               18
   D.  10000 FT:  230/10                               10
   E.  18000 FT:  080/10                               MS3
   F.  24000 FT:  060/20                               MS14
   G.  30000 FT:  080/25                               MS29
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY  WITH A FEW SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 3000 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 10KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTH TO SOUTHWESTERLY WINDS.
     MAINLY CLOUDY WITH SUNNY PERIODS.=

    ===================================================================
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 04:35 HKT on 03 Sep 18

    VHHK SIGMET 3 VALID 022035/030030 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11354 - N2030 E11130 - N2130 E11130 - N2224 E11342 - N2224 E11354 - N2100 E11354 TOP FL400 MOV NE 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 03/Sep/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.9 C
Minimum Air Temperature                     24.6 C
Grass Minimum Temperature                   25.0 C
Relative Humidity                        74 - 97 Percent
Rainfall                                     9.8 mm 
Total rainfall since 1st January          1631.8 mm
Against an average of                     1929.1 mm

Other Stations                Min                  Max
King's Park                  24.3 C               30.3 C
Wong Chuk Hang               24.0 C               28.6 C
Ta Kwu Ling                  24.2 C               30.4 C
Lau Fau Shan                 23.7 C               29.4 C
Sha Tin                      24.5 C               30.6 C
Tuen Mun                     24.2 C               28.8 C
Tseung Kwan O                24.1 C               29.5 C
Sai Kung                     24.6 C               28.4 C
Cheung Chau                  23.4 C               27.4 C
Chek Lap Kok                 24.4 C               30.3 C
Tsing Yi                     24.6 C               29.1 C
Shek Kong                    24.3 C               31.6 C
Tsuen Wan Ho Koon            23.8 C               28.0 C
Tsuen Wan Shing Mun Valley   24.4 C               29.9 C
Hong Kong Park               23.7 C               28.2 C
Shau Kei Wan                 24.1 C               29.5 C
Kowloon City                 24.4 C               30.9 C
Happy Valley                 24.5 C               30.4 C
Wong Tai Sin                 24.4 C               31.1 C
Stanley                      23.9 C               29.4 C
Kwun Tong                    24.4 C               31.9 C
Sham Shui Po                 24.5 C               30.6 C
Kai Tak Runway Park          24.6 C               30.6 C
Yuen Long Park               24.1 C               30.2 C
Tai Mei Tuk               24.3 C               29.1 C

Duration of sunshine (King's Park):              4.8 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 10.
 

Yesterday's (02 Sep 2018) 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                         0.11
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                      0.12
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 02 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <03 Sep 2018> 

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