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Bulletin issued at 00:11 HKT 08/Sep/2018

At midnight at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 75 per cent.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 2:30 a.m. today. Thunderstorms are expected to occur over Lantau and New Territories West.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 29 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 28 degrees;
Sha Tin 28 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 29 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 27 degrees;
Tsing Yi 29 degrees;
Shek Kong 28 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 28 degrees;
Kowloon City 28 degrees;
Happy Valley 30 degrees;
Wong Tai Sin 28 degrees;
Stanley 29 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 29 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 28 degrees.

Between 10:45 and 11:45 p.m., lightning was detected within Lantau. The rainfall recorded in various regions were:

Islands District 0 to 23 mm.


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


Climatological Information for 8 Sep

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

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Bulletin updated at 00:00 HKT 08/Sep/2018

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

Winds were weak over the coastal areas of Guangdong yesterday. A cold front moved across southern China yesterday and brought thundery showers to the region. Locally, it was mainly cloudy with sunny intervals. There were a few showers and isolated thunderstorms. Convective activities triggered by high temperatures brought more than 20 millimetres of rainfall to North District. The northeast monsoon associated with the cold front is expected to bring slightly cooler weather to the region over the weekend.

Weather forecast for Hong Kong (Saturday, 8 Sep 2018)

Mainly cloudy with a few showers. Thunderstorms at first. It will be slightly cooler. Temperatures will range between 25 and 29 degrees. Moderate northeasterly winds.

Outlook : A few rain patches and slightly cooler weather on Sunday. Sunny intervals in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 08/09/2018; 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 07/Sep/2018

N0 WARNING.

GENERAL SITUATION AT 070900 UTC:
COLD FRONT 23N 109E 25N 115E 27N 123E S 15KT.

MARINE FORECAST FOR 24 HOURS FROM 071300 UTC:

HONG KONG= S 3-4, BEC NE 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA BEC 2 M. TEMP 25-29 C. =
KWANGTUNG= S 4-5, BEC NE 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. =
TAIWAN STRAIT= S 4-5, BEC NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 3-4 M. =
BASHI= S TO SE 4-5, W 5-6 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M, 3 M LATER. SWELL SW UP TO 2 M. =
PRATAS= S 4-5, BEC NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
BALINTANG= SE 4-5, BEC W 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 2 M, BEC 3 M. SWELL SW UP TO 2 M. =
SCARBOROUGH= S TO SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
PARACEL= S 4-5, BEC NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. SWELL SW UP TO 2 M. =
TONKIN= NE 6-7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M. =
DANANG= S 4-5, BEC NE 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
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    Bulletin issued at 23:30 HKT 07/Sep/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 07 September 2018

    Warnings:
    Strong winds in Nan'ao.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Northeast force 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Nan'ao:
    Northeast force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 5.
    Isolated squally showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 6 to 7. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind north force 2
      Visibility 18 Kilometres

    Shantou Wind southwest force 1
      Visibility 30 Kilometres

    Dongsha Wind east force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind north-northwest force 1

    Macau Wind northeast force 1
      Visibility 35 Kilometres

    Xisha Wind calm
      Visibility 30 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 07/SEP/2018
    (Next update at 01:30 HKT 08/SEP/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A COLD FRONT OVER THE NORTHERN PART OF SOUTHERN
     CHINA IS MOVING SOUTHWARDS GRADUALLY AND
     BRINGING THUNDERY SHOWERS TO THE REGION. THE
     COLD FRONT WILL MOVE ACROSS THE COASTAL AREAS
     OVERNIGHT.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  VRB/5-10
                  BEGMG 030/10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  180/10
                  BECMG 030/10-15                      30-26
   B.   2000 FT:  150/10
                  BEC 030/10-15                        25-22
   C.   5000 FT:  040/10                               19
   D.  10000 FT:  090/10                               10
   E.  18000 FT:  040/10                               MS1
   F.  24000 FT:  030/10                               MS12
   G.  30000 FT:  020/15                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW SHOWERS AND
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 4000 FT.  TEMPO FEW CB 1000 FT
      SCT 2000 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS.  TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 0.5-1.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS.  MAINLY CLOUDY
     WITH A FEW SHOWERS AND 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 23:07 HKT on 07 Sep 18

    VHHK SIGMET 1 VALID 071512/071912 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11730 - N1848 E11206 - N1930 E11130 - N2130 E11130 - N2400 E11730 - N2142 E11730 TOP FL420 MOV S 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 08/Sep/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.2 C
Minimum Air Temperature                     28.0 C
Grass Minimum Temperature                   27.3 C
Relative Humidity                        73 - 87 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          1632.2 mm
Against an average of                     1986.9 mm

Other Stations                Min                  Max
King's Park                  27.3 C               31.1 C
Wong Chuk Hang               26.3 C               31.5 C
Ta Kwu Ling                  25.6 C               33.6 C
Lau Fau Shan                 26.2 C               30.8 C
Tai Po                       26.5 C               31.6 C
Sha Tin                      26.5 C               33.0 C
Tuen Mun                     26.9 C               33.2 C
Tseung Kwan O                25.8 C               32.4 C
Sai Kung                     27.1 C               31.8 C
Cheung Chau                  26.6 C               31.8 C
Chek Lap Kok                 26.6 C               33.1 C
Tsing Yi                     26.6 C               32.7 C
Shek Kong                    25.9 C               33.0 C
Tsuen Wan Ho Koon            25.0 C               29.3 C
Tsuen Wan Shing Mun Valley   25.5 C               32.2 C
Hong Kong Park               26.8 C               33.2 C
Shau Kei Wan                 26.6 C               31.3 C
Kowloon City                 27.2 C               33.6 C
Happy Valley                 26.9 C               34.0 C
Wong Tai Sin                 26.7 C               33.1 C
Stanley                      26.9 C               32.2 C
Kwun Tong                    27.5 C               32.7 C
Sham Shui Po                 27.3 C               32.3 C
Kai Tak Runway Park          26.7 C               31.3 C
Yuen Long Park               25.7 C               34.1 C
Tai Mei Tuk               26.9 C               33.7 C

Duration of sunshine (King's Park):              3.5 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        27.5 C 

Yesterday's (07 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                           0.09
Tap Mun                             0.09
Kat O                               0.09
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.08
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 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 07 Sep
     2003copy right image | Important notices | Privacy policy Last revision date: <08 Sep 2018> 

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