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Bulletin issued at 05:02 HKT 06/Dec/2018

At 5 a.m. at the Hong Kong Observatory the air temperature was 22 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

King's Park 21 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 21 degrees;
Tai Po 21 degrees;
Sha Tin 21 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Cheung Chau 22 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 22 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 21 degrees;
Kowloon City 21 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 21 degrees;
Kwun Tong 21 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 22 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 6 Dec

Regional Weather in Hong Kong

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Bulletin updated at 04:45 HKT 06/Dec/2018

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

A fresh easterly airstream is affecting the coast of Guangdong. Meanwhile, pressure is rising over central China. A cold front is expected to form and move across the south China coast overnight today.

Weather forecast for today

Mainly cloudy. One or two light rain patches in the morning and at night. The maximum temperature will be about 24 degrees. Moderate easterly winds, occasionally fresh offshore.

Outlook : Temperatures dropping significantly tomorrow. Becoming cold and rainy early next week.


(The above forecast period is valid up to 23:59 HKT today, 06/12/2018; 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 05/Dec/2018

N0 WARNING.

GENERAL SITUATION AT 050900 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 051300 UTC:

HONG KONG= E 5-6, OCNL 7. A FEW LGT RAIN PATCHES. SEA UP TO 4 M. SWELL E TO NE UP TO 2 M. TEMP 21-24 C. =
KWANGTUNG= E TO NE 6-7. A FEW LGT RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2 M. =
TAIWAN STRAIT= NE 6-7. A FEW LGT RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2-3 M. =
BASHI= E TO NE 6-7. CLD. SEA 3-4 M. SWELL E TO NE 2-3 M. =
PRATAS= E TO NE 5-6, OCNL 7. CLD. SEA UP TO 4 M. SWELL E TO NE 2 M. =
BALINTANG= E TO NE 6-7. CLD. SEA 3-4 M. SWELL E TO NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5, OCNL 6. FINE. SEA UP TO 3 M. SWELL E TO NE 2 M. =
PARACEL= E TO NE 4-5, OCNL 6. CLD. SEA UP TO 3 M. SWELL E TO NE UP TO 2 M. =
TONKIN= E 4-5. CLD. SEA UP TO 2 M. =
DANANG= E 4-5. CLD. 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
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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 05:30 HKT 06/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 06 December 2018

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5, occasionally force 6, becoming north to northeast force 5 to 6 later.
    A few light rain patches.
    Moderate to rough seas.

    Nan'ao:
    East to northeast force 6 to 7.
    Rough seas.

    Shanwei and South of Hong Kong:
    East force 5 to 6, becoming north to northeast force 5 to 6 later.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 5, becoming north to northeast force 5 to 6 later.
    Moderate to rough seas.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7, occasionally force 8.

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

    Waglan Island Wind east-northeast force 5
      Visibility 11 Kilometres

    Shantou Wind east-northeast force 2
      Visibility 28 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind east force 3
      Visibility 9 Kilometres

    Xisha Wind northeast force 2
      Visibility 21 Kilometres

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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 06/DEC/2018
    (Next update at 9:00-9:30 HKT 06/DEC/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A FRESH TO STRONG EASTERLY AIRSTREAM IS
     AFFECTING THE COAST OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10-15
       OFFSHORE:  080/20-25                            22-26
   B.   2000 FT:  090/20-25                            18
   C.   5000 FT:  160/15                               16
   D.  10000 FT:  220/25                               11
   E.  18000 FT:  240/25                               MS3
   F.  24000 FT:  260/35                               MS16
   G.  30000 FT:  270/50                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW LIGHT RAIN PATCHES
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT
   K. VISIBILITY    : 9KM.  TEMPO 4000 M IN RAIN
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10600 FT
   M. TURBULENCE    : MOD TO SEV. AT FIRST
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS.  MAINLY
     CLOUDY.  A FEW RAIN AND MIST PATCHES AT NIGHT.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

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    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 06/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.8 C
Minimum Air Temperature                     22.5 C
Grass Minimum Temperature                   20.7 C
Relative Humidity                        76 - 83 Percent
Rainfall                                      Trace 
Total rainfall since 1st January          2151.0 mm
Against an average of                     2373.8 mm

Other Stations                Min                  Max
King's Park                  21.9 C               24.6 C
Wong Chuk Hang               22.2 C               25.2 C
Ta Kwu Ling                  20.5 C               25.4 C
Lau Fau Shan                 20.8 C               28.3 C
Tai Po                       21.8 C               23.3 C
Sha Tin                      22.0 C               24.0 C
Tuen Mun                     22.2 C               26.9 C
Tseung Kwan O                21.5 C               23.7 C
Cheung Chau                  21.9 C               24.0 C
Chek Lap Kok                 23.1 C               26.5 C
Tsing Yi                     22.7 C               25.7 C
Shek Kong                    20.7 C               25.5 C
Tsuen Wan Ho Koon            20.7 C               23.5 C
Tsuen Wan Shing Mun Valley   22.0 C               24.4 C
Hong Kong Park               22.3 C               24.9 C
Shau Kei Wan                 21.5 C               24.6 C
Kowloon City                 21.7 C               25.1 C
Happy Valley                 22.7 C               25.3 C
Wong Tai Sin                 22.3 C               25.5 C
Stanley                      21.9 C               24.5 C
Kwun Tong                    21.5 C               24.5 C
Sham Shui Po                 22.4 C               25.9 C
Kai Tak Runway Park          22.4 C               24.8 C
Yuen Long Park               21.1 C               26.4 C
Tai Mei Tuk               21.8 C               23.7 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 0.9,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (05 Dec 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 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                               0.10
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 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 05 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <06 Dec 2018> 

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