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Bulletin issued at 13:02 HKT 05/Dec/2018

At 1 p.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 80 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 25 degrees;
Lau Fau Shan 26 degrees;
Tai Po 23 degrees;
Sha Tin 23 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 23 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 24 degrees;
Shek Kong 24 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 23 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 23 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 5 Dec

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 12:45 HKT 05/Dec/2018

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

A fresh to strong easterly airstream is affecting the coast of Guangdong.

Weather forecast for this afternoon and tonight

Cloudy with one or two light rain patches. Moderate to fresh easterly winds, occasionally strong offshore.

Outlook : Mainly cloudy tomorrow. Temperatures dropping significantly on Friday. Becoming cold and rainy early next week.


(The above forecast period is valid up to 23:59 HKT today, 05/12/2018; 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 09:00 HKT 05/Dec/2018

N0 WARNING.

GENERAL SITUATION AT 042100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 050100 UTC:

HONG KONG= E 5-6, OCNL 7. ONE OR TWO RAIN PATCHES. SEA UP TO 4 M. TEMP 25-20 C. =
KWANGTUNG= E TO NE 6-7. ONE OR TWO RAIN PATCHES. SEA 3-4 M. =
TAIWAN STRAIT= NE 6-7. ONE OR TWO RAIN PATCHES. SEA 3-4 M. SWELL E TO NE 2 M. =
BASHI= E TO NE 5-6, OCNL 7. CLD. SEA UP TO 4 M. SWELL E TO NE 2 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 5-6, OCNL 7. CLD. SEA UP TO 4 M. SWELL E TO NE 2 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. =
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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    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 12:30 HKT 05/Dec/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 05 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 to 6, occasionally force 7.
    One or two 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, occasionally force 7.
    Moderate to rough seas.

    Shangchuan Dao:
    East force 5 to 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, becoming 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 6
      Visibility 12 Kilometres

    Shantou Wind east-northeast force 3
      Visibility 27 Kilometres

    Dongsha Wind northeast force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 6

    Macau Wind east force 3
      Visibility 7 Kilometres

    Xisha Wind northeast force 2
      Visibility 27 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 12:30 HKT 05/DEC/2018
    (Next update at 17:30 HKT 05/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 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/15
       OFFSHORE:  090/20-25, OCNL 30                   26-22
   B.   2000 FT:  110/20-25                            19
   C.   5000 FT:  160/15                               16
   D.  10000 FT:  220/15                               10
   E.  18000 FT:  260/25                               MS5
   F.  24000 FT:  260/35                               MS16
   G.  30000 FT:  270/55                               MS30
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW RAIN PATCHES.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV.
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS, OCCASIONALLY
     STRONG OFFSHORE.  MAINLY CLOUDY WITH A FEW RAIN
     AND MIST PATCHES.=

    ===================================================================
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)

    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 05/Dec/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.1 C
Minimum Air Temperature                     22.7 C
Grass Minimum Temperature                   19.8 C
Relative Humidity                        70 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January            2151 mm
Against an average of                     2373.8 mm

Other Stations                Min                  Max
King's Park                  21.5 C               29.3 C
Wong Chuk Hang               20.4 C               29.5 C
Ta Kwu Ling                  17.8 C               29.9 C
Lau Fau Shan                 20.0 C               28.2 C
Tai Po                       19.8 C               26.7 C
Sha Tin                      19.6 C               28.5 C
Tuen Mun                     20.8 C               29.9 C
Tseung Kwan O                19.7 C               29.4 C
Sai Kung                     21.0 C               27.8 C
Cheung Chau                  20.5 C               28.7 C
Chek Lap Kok                 21.8 C               28.0 C
Tsing Yi                     21.1 C               29.3 C
Shek Kong                    18.9 C               28.2 C
Tsuen Wan Ho Koon            19.9 C               28.4 C
Tsuen Wan Shing Mun Valley   19.9 C               30.0 C
Hong Kong Park               21.3 C               28.3 C
Shau Kei Wan                 22.0 C               28.1 C
Kowloon City                 21.7 C               30.0 C
Happy Valley                 20.2 C               29.7 C
Wong Tai Sin                 21.1 C               29.9 C
Stanley                      22.0 C               27.7 C
Kwun Tong                    22.0 C               29.1 C
Sham Shui Po                 21.7 C               29.8 C
Kai Tak Runway Park          22.4 C               28.2 C
Yuen Long Park               19.0 C               29.9 C
Tai Mei Tuk               20.8 C               29.2 C

Duration of sunshine (King's Park):              9.1 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 6.
 

Yesterday's (04 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 04 Dec
     2003copy right image | Important notices | Privacy policy Last revision date: <05 Dec 2018> 

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